diff --git a/backend/src/main/java/core/api/controller/ScheduleController.java b/backend/src/main/java/core/api/controller/ScheduleController.java
index 5242b9d..d07a91c 100644
--- a/backend/src/main/java/core/api/controller/ScheduleController.java
+++ b/backend/src/main/java/core/api/controller/ScheduleController.java
@@ -41,7 +41,7 @@ public class ScheduleController {
     @GetMapping("/schedules/{taskID}")
     public ResponseEntity<?> loadAllSchedulesOfTask(@PathVariable long taskID) {
         PermissionResult<Task> permissionResult = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!permissionResult.isHasPermissions()) {
+        if(permissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -72,7 +72,7 @@ public class ScheduleController {
 
     private ResponseEntity<?> createAbstractSchedule(long taskID, ScheduleFieldInfo scheduleFieldInfo) {
         PermissionResult<Task> permissionResult = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!permissionResult.isHasPermissions()) {
+        if(permissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -111,7 +111,7 @@ public class ScheduleController {
 
     private ResponseEntity<?> editAbstractSchedule(long scheduleID, ScheduleFieldInfo scheduleFieldInfo) {
         PermissionResult<AbstractSchedule> permissionResult = taskScheduleService.getSchedulePermissions(scheduleID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!permissionResult.isHasPermissions()) {
+        if(permissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -141,7 +141,7 @@ public class ScheduleController {
     @DeleteMapping("/schedules/{scheduleID}")
     public ResponseEntity<?> deleteSchedule(@PathVariable long scheduleID) {
         PermissionResult<AbstractSchedule> permissionResult = taskScheduleService.getSchedulePermissions(scheduleID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!permissionResult.isHasPermissions()) {
+        if(permissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -163,7 +163,7 @@ public class ScheduleController {
     @PostMapping("/schedules/{taskID}/now")
     public ResponseEntity<?> scheduleNow(@PathVariable long taskID) {
         PermissionResult<Task> permissionResult = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!permissionResult.isHasPermissions()) {
+        if(permissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -193,7 +193,7 @@ public class ScheduleController {
     @PostMapping("/schedules/{scheduleID}/activate")
     public ResponseEntity<?> activateSchedule(@PathVariable long scheduleID) {
         PermissionResult<AbstractSchedule> permissionResult = taskScheduleService.getSchedulePermissions(scheduleID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!permissionResult.isHasPermissions()) {
+        if(permissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -217,7 +217,7 @@ public class ScheduleController {
     @PostMapping("/schedules/{scheduleID}/stop/{finish}")
     public ResponseEntity<?> stopSchedule(@PathVariable long scheduleID, @PathVariable boolean finish) {
         PermissionResult<AbstractSchedule> permissionResult = taskScheduleService.getSchedulePermissions(scheduleID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!permissionResult.isHasPermissions()) {
+        if(permissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -232,7 +232,7 @@ public class ScheduleController {
     @PostMapping("/schedules/{taskID}/forgotten")
     public ResponseEntity<?> registerForgottenSchedule(@PathVariable long taskID, @RequestBody @Valid ForgottenScheduleInfo forgottenScheduleInfo) {
         PermissionResult<Task> permissionResult = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!permissionResult.isHasPermissions()) {
+        if(permissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -259,7 +259,7 @@ public class ScheduleController {
         List<PermissionResult<AbstractSchedule>> permissionResults = new ArrayList<>();
         for(long scheduleID: scheduleIDs) {
             PermissionResult<AbstractSchedule> permissionResult = taskScheduleService.getSchedulePermissions(scheduleID, SecurityContextHolder.getContext().getAuthentication().getName());
-            if(!permissionResult.isHasPermissions()) {
+            if(permissionResult.isNoPermissions()) {
                 return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
             }
 
@@ -278,7 +278,7 @@ public class ScheduleController {
     @GetMapping("/schedules/{scheduleID}/details")
     public ResponseEntity<?> loadScheduleDetails(@PathVariable long scheduleID) {
         PermissionResult<AbstractSchedule> permissionResult = taskScheduleService.getSchedulePermissions(scheduleID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!permissionResult.isHasPermissions()) {
+        if(permissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -292,7 +292,7 @@ public class ScheduleController {
     @PostMapping("/schedules/{scheduleID}/stopManual")
     public ResponseEntity<?> stopManual(@PathVariable long scheduleID, @Valid @RequestBody ManualScheduleStopInfo manualScheduleStopInfo) {
         PermissionResult<AbstractSchedule> permissionResult = taskScheduleService.getSchedulePermissions(scheduleID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!permissionResult.isHasPermissions()) {
+        if(permissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
diff --git a/backend/src/main/java/core/api/controller/StatisticController.java b/backend/src/main/java/core/api/controller/StatisticController.java
index af632be..36e2e0e 100644
--- a/backend/src/main/java/core/api/controller/StatisticController.java
+++ b/backend/src/main/java/core/api/controller/StatisticController.java
@@ -3,9 +3,7 @@ package core.api.controller;
 import core.api.models.auth.SimpleStatusResponse;
 import core.api.models.timemanager.history.TaskgroupActivityInfo;
 import core.api.models.timemanager.history.WorkingStatus;
-import core.api.models.timemanager.taskgroup.TaskgroupEntityInfo;
 import core.entities.timemanager.AbstractSchedule;
-import core.entities.timemanager.Task;
 import core.entities.timemanager.Taskgroup;
 import core.services.PermissionResult;
 import core.services.ServiceExitCode;
@@ -14,12 +12,10 @@ import core.services.TaskgroupService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.context.SecurityContextHolder;
-import org.springframework.security.core.parameters.P;
 import org.springframework.web.bind.annotation.*;
 
 import java.time.*;
 import java.time.format.DateTimeFormatter;
-import java.time.temporal.TemporalAdjusters;
 import java.util.*;
 
 @CrossOrigin(origins = "*", maxAge = 3600)
@@ -49,7 +45,7 @@ public class StatisticController {
     @GetMapping("/statistics/taskgroup-activity/{taskgroupID}/{startingDate}/{endingDate}/{includeSubTaskgroups}")
     public ResponseEntity<?> getTaskgroupActivity(@PathVariable long taskgroupID, @PathVariable String startingDate, @PathVariable String endingDate, @PathVariable boolean includeSubTaskgroups){
         PermissionResult<Taskgroup> taskgroupPermissionResult = taskgroupService.getTaskgroupByIDAndUsername(taskgroupID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!taskgroupPermissionResult.isHasPermissions()) {
+        if(taskgroupPermissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         } else if(taskgroupPermissionResult.getExitCode() == ServiceExitCode.MISSING_ENTITY) {
             return ResponseEntity.status(404).body(new SimpleStatusResponse("failed"));
diff --git a/backend/src/main/java/core/api/controller/TaskController.java b/backend/src/main/java/core/api/controller/TaskController.java
index 0d814f0..823e1aa 100644
--- a/backend/src/main/java/core/api/controller/TaskController.java
+++ b/backend/src/main/java/core/api/controller/TaskController.java
@@ -64,7 +64,7 @@ public class TaskController {
     @GetMapping("/tasks/{taskgroupID}/{status}")
     public ResponseEntity<?> listTasksOfTaskgroup(@PathVariable long taskgroupID, @PathVariable String status) {
         PermissionResult<Taskgroup> taskgroupPermissionResult = taskgroupService.getTaskgroupByIDAndUsername(taskgroupID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!taskgroupPermissionResult.isHasPermissions()) {
+        if(taskgroupPermissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -78,7 +78,7 @@ public class TaskController {
     @PutMapping("/tasks/{taskgroupID}")
     public ResponseEntity<?> createTask(@PathVariable long taskgroupID, @RequestBody @Valid TaskFieldInfo taskFieldInfo) {
         PermissionResult<Taskgroup> taskgroupPermissionResult = taskgroupService.getTaskgroupByIDAndUsername(taskgroupID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!taskgroupPermissionResult.isHasPermissions()) {
+        if(taskgroupPermissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -101,7 +101,7 @@ public class TaskController {
     @PostMapping("/tasks/{taskID}")
     public ResponseEntity<?> editTask(@PathVariable long taskID, @RequestBody @Valid TaskFieldInfo taskFieldInfo) {
         PermissionResult<Task> taskPermissionResult = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if (!taskPermissionResult.isHasPermissions()) {
+        if (taskPermissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -124,7 +124,7 @@ public class TaskController {
     @DeleteMapping("/tasks/{taskID}")
     public ResponseEntity<?> deleteTask(@PathVariable long taskID) {
         PermissionResult<Task> taskPermissionResult = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if (!taskPermissionResult.isHasPermissions()) {
+        if (taskPermissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -139,7 +139,7 @@ public class TaskController {
     @GetMapping("/tasks/{taskID}")
     public ResponseEntity<?> loadTaskDetails(@PathVariable long taskID) {
         PermissionResult<Task> taskPermissionResult = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if (!taskPermissionResult.isHasPermissions()) {
+        if (taskPermissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -153,7 +153,7 @@ public class TaskController {
     @PostMapping("/tasks/{taskID}/finish")
     public ResponseEntity<?> finishTask(@PathVariable long taskID) {
         PermissionResult<Task> taskPermissionResult = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if (!taskPermissionResult.isHasPermissions()) {
+        if (taskPermissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
diff --git a/backend/src/main/java/core/api/controller/TaskSeriesController.java b/backend/src/main/java/core/api/controller/TaskSeriesController.java
new file mode 100644
index 0000000..c2d2994
--- /dev/null
+++ b/backend/src/main/java/core/api/controller/TaskSeriesController.java
@@ -0,0 +1,45 @@
+package core.api.controller;
+
+import core.api.models.timemanager.tasks.repeatinginfo.TaskRepeatDayInfo;
+import core.api.models.timemanager.tasks.repeatinginfo.TaskRepeatWeekInfo;
+import core.services.ServiceExitCode;
+import core.services.ServiceResult;
+import core.services.TaskSeriesService;
+import core.services.TaskService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.web.bind.annotation.*;
+
+import javax.validation.Valid;
+
+@CrossOrigin(origins = "*", maxAge = 3600)
+@RestController
+@RequestMapping("/api")
+public class TaskSeriesController {
+
+    @Autowired private TaskService taskService;
+    @Autowired private TaskSeriesService taskSeriesService;
+
+    @PostMapping("/tasks/{taskID}/taskseries/weekly")
+    public ResponseEntity<?> onCreateTaskSeries(@PathVariable long taskID, @Valid @RequestBody TaskRepeatWeekInfo taskRepeatWeekInfo) {
+        var taskPermission = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
+        if(taskPermission.hasIssue()) {
+            return taskPermission.mapToResponseEntity();
+        } else {
+            ServiceExitCode serviceExitCode = taskSeriesService.createTaskSeries(taskPermission.getResult(), taskRepeatWeekInfo);
+            return serviceExitCode.mapToResponseEntity();
+        }
+    }
+
+    @PostMapping("/tasks/{taskID}/taskseries/daily")
+    public ResponseEntity<?> onCreateTaskSeries(@PathVariable long taskID, @Valid @RequestBody TaskRepeatDayInfo taskRepeatDayInfo) {
+        var taskPermission = taskService.getTaskPermissions(taskID, SecurityContextHolder.getContext().getAuthentication().getName());
+        if(taskPermission.hasIssue()) {
+            return taskPermission.mapToResponseEntity();
+        } else {
+            ServiceExitCode serviceExitCode = taskSeriesService.createTaskSeries(taskPermission.getResult(), taskRepeatDayInfo);
+            return serviceExitCode.mapToResponseEntity();
+        }
+    }
+}
diff --git a/backend/src/main/java/core/api/controller/TaskgroupController.java b/backend/src/main/java/core/api/controller/TaskgroupController.java
index e9cdea2..7183f13 100644
--- a/backend/src/main/java/core/api/controller/TaskgroupController.java
+++ b/backend/src/main/java/core/api/controller/TaskgroupController.java
@@ -11,7 +11,6 @@ import org.springframework.web.bind.annotation.*;
 
 import javax.validation.Valid;
 import java.util.List;
-import java.util.Set;
 
 @CrossOrigin(origins = "*", maxAge = 3600)
 @RestController
@@ -40,7 +39,7 @@ public class TaskgroupController {
     @PostMapping("/taskgroups/{taskgroupID}")
     public ResponseEntity<?> editTaskgroup(@PathVariable long taskgroupID, @Valid @RequestBody TaskgroupFieldInfo taskgroupFieldInfo) {
         PermissionResult<Taskgroup> taskgroupPermissionResult = taskgroupService.getTaskgroupByIDAndUsername(taskgroupID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!taskgroupPermissionResult.isHasPermissions()) {
+        if(taskgroupPermissionResult.isNoPermissions()) {
            return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -59,7 +58,7 @@ public class TaskgroupController {
     @DeleteMapping("/taskgroups/{taskgroupID}")
     public ResponseEntity<?> deleteTaskgroup(@PathVariable long taskgroupID) {
         PermissionResult<Taskgroup> taskgroupPermissionResult = taskgroupService.getTaskgroupByIDAndUsername(taskgroupID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if (!taskgroupPermissionResult.isHasPermissions()) {
+        if (taskgroupPermissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -88,7 +87,7 @@ public class TaskgroupController {
     @GetMapping("/taskgroups/{taskgroupID}")
     public ResponseEntity<?> getDetails(@PathVariable long taskgroupID) {
         PermissionResult<Taskgroup> taskgroupPermissionResult = taskgroupService.getTaskgroupByIDAndUsername(taskgroupID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if(!taskgroupPermissionResult.isHasPermissions()) {
+        if(taskgroupPermissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
@@ -102,7 +101,7 @@ public class TaskgroupController {
     @DeleteMapping("/taskgroups/{taskgroupID}/clear")
     public ResponseEntity<?> clearTasks(@PathVariable long taskgroupID) {
         PermissionResult<Taskgroup> taskgroupPermissionResult = taskgroupService.getTaskgroupByIDAndUsername(taskgroupID, SecurityContextHolder.getContext().getAuthentication().getName());
-        if (!taskgroupPermissionResult.isHasPermissions()) {
+        if (taskgroupPermissionResult.isNoPermissions()) {
             return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
         }
 
diff --git a/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/DeadlineStrategy.java b/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/DeadlineStrategy.java
new file mode 100644
index 0000000..13d93c0
--- /dev/null
+++ b/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/DeadlineStrategy.java
@@ -0,0 +1,8 @@
+package core.api.models.timemanager.tasks.repeatinginfo;
+
+public enum DeadlineStrategy {
+
+    FIX_DEADLINE,
+    DEADLINE_EQUAL_START,
+    DEADLINE_FIT_START
+}
diff --git a/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/TaskRepeatDayInfo.java b/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/TaskRepeatDayInfo.java
new file mode 100644
index 0000000..65d91c9
--- /dev/null
+++ b/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/TaskRepeatDayInfo.java
@@ -0,0 +1,35 @@
+package core.api.models.timemanager.tasks.repeatinginfo;
+
+import java.time.LocalDate;
+
+public class TaskRepeatDayInfo {
+
+    private int offset;
+    private DeadlineStrategy deadlineStrategy;
+
+    private LocalDate endDate;
+
+    public int getOffset() {
+        return offset;
+    }
+
+    public void setOffset(int offset) {
+        this.offset = offset;
+    }
+
+    public DeadlineStrategy getDeadlineStrategy() {
+        return deadlineStrategy;
+    }
+
+    public void setDeadlineStrategy(DeadlineStrategy deadlineStrategy) {
+        this.deadlineStrategy = deadlineStrategy;
+    }
+
+    public LocalDate getEndDate() {
+        return endDate;
+    }
+
+    public void setEndDate(LocalDate endDate) {
+        this.endDate = endDate;
+    }
+}
diff --git a/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/TaskRepeatWeekDayInfo.java b/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/TaskRepeatWeekDayInfo.java
new file mode 100644
index 0000000..8589f14
--- /dev/null
+++ b/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/TaskRepeatWeekDayInfo.java
@@ -0,0 +1,9 @@
+package core.api.models.timemanager.tasks.repeatinginfo;
+
+public class TaskRepeatWeekDayInfo {
+
+    private int weekday;
+    private int offset;
+
+
+}
diff --git a/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/TaskRepeatWeekInfo.java b/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/TaskRepeatWeekInfo.java
new file mode 100644
index 0000000..19a4ce8
--- /dev/null
+++ b/backend/src/main/java/core/api/models/timemanager/tasks/repeatinginfo/TaskRepeatWeekInfo.java
@@ -0,0 +1,40 @@
+package core.api.models.timemanager.tasks.repeatinginfo;
+
+import org.hibernate.validator.constraints.Length;
+
+import java.time.LocalDate;
+import java.util.List;
+
+public class TaskRepeatWeekInfo {
+
+    @Length(min = 1, max = 7)
+    private List<TaskRepeatWeekDayInfo> weekDayInfos;
+
+    private DeadlineStrategy deadlineStrategy;
+
+    private LocalDate endDate;
+
+    public List<TaskRepeatWeekDayInfo> getWeekDayInfos() {
+        return weekDayInfos;
+    }
+
+    public void setWeekDayInfos(List<TaskRepeatWeekDayInfo> weekDayInfos) {
+        this.weekDayInfos = weekDayInfos;
+    }
+
+    public DeadlineStrategy getDeadlineStrategy() {
+        return deadlineStrategy;
+    }
+
+    public void setDeadlineStrategy(DeadlineStrategy deadlineStrategy) {
+        this.deadlineStrategy = deadlineStrategy;
+    }
+
+    public LocalDate getEndDate() {
+        return endDate;
+    }
+
+    public void setEndDate(LocalDate endDate) {
+        this.endDate = endDate;
+    }
+}
diff --git a/backend/src/main/java/core/entities/timemanager/Task.java b/backend/src/main/java/core/entities/timemanager/Task.java
index b6bf550..728101b 100644
--- a/backend/src/main/java/core/entities/timemanager/Task.java
+++ b/backend/src/main/java/core/entities/timemanager/Task.java
@@ -22,21 +22,17 @@ public class Task {
     @JoinColumn(name = "taskgroup_id")
     private Taskgroup taskgroup;
     private String taskName;
-
     private LocalDate startDate;
-
     private LocalDate deadline;
-
     private int eta;
-
     private boolean finished;
-
     private boolean finishable;
-
     @OneToMany(mappedBy = "task", cascade = CascadeType.ALL, fetch = FetchType.EAGER, orphanRemoval = true)
     private List<AbstractSchedule> basicTaskSchedules;
-
     private int workTime;
+    @ManyToOne
+    @JoinColumn(referencedColumnName = "taskSerieID")
+    private TaskSerie taskSerie;
 
     public Task() {
         this.basicTaskSchedules = new ArrayList<>();
@@ -52,6 +48,17 @@ public class Task {
         this.finishable = taskFieldInfo.isFinishable();
     }
 
+    public static Task cloneTask(Task task) {
+       Task clonedTask = new Task();
+       clonedTask.setTaskgroup(task.getTaskgroup());
+       clonedTask.setTaskName(task.taskName);
+       clonedTask.setEta(task.eta);
+       clonedTask.setFinished(false);
+       clonedTask.setFinishable(task.finishable);
+       return clonedTask;
+    }
+
+
     public long getTaskID() {
         return taskID;
     }
@@ -124,6 +131,14 @@ public class Task {
         this.taskID = taskID;
     }
 
+    public TaskSerie getTaskSerie() {
+        return taskSerie;
+    }
+
+    public void setTaskSerie(TaskSerie taskSerie) {
+        this.taskSerie = taskSerie;
+    }
+
     public List<AbstractSchedule> getBasicTaskSchedules() {
         if(basicTaskSchedules == null) {
             return new ArrayList<>();
diff --git a/backend/src/main/java/core/entities/timemanager/TaskSerie.java b/backend/src/main/java/core/entities/timemanager/TaskSerie.java
new file mode 100644
index 0000000..f317f34
--- /dev/null
+++ b/backend/src/main/java/core/entities/timemanager/TaskSerie.java
@@ -0,0 +1,36 @@
+package core.entities.timemanager;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Table(name = "task_series")
+public class TaskSerie {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long taskSerieID;
+
+    @OneToMany(orphanRemoval = false, cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy = "taskSerie")
+    List<Task> tasks = new ArrayList<>();
+
+
+
+
+    public long getTaskSerieID() {
+        return taskSerieID;
+    }
+
+    public List<Task> getTasks() {
+        return tasks;
+    }
+
+    public void setTasks(List<Task> tasks) {
+        this.tasks = tasks;
+    }
+
+    public void addTask(Task task) {
+        this.tasks.add(task);
+    }
+}
diff --git a/backend/src/main/java/core/repositories/timemanager/TaskSeriesRepository.java b/backend/src/main/java/core/repositories/timemanager/TaskSeriesRepository.java
new file mode 100644
index 0000000..d03fc42
--- /dev/null
+++ b/backend/src/main/java/core/repositories/timemanager/TaskSeriesRepository.java
@@ -0,0 +1,9 @@
+package core.repositories.timemanager;
+
+import core.entities.timemanager.TaskSerie;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface TaskSeriesRepository extends CrudRepository<TaskSerie, Long> {
+}
diff --git a/backend/src/main/java/core/services/PermissionResult.java b/backend/src/main/java/core/services/PermissionResult.java
index aafe4ef..c7b9a76 100644
--- a/backend/src/main/java/core/services/PermissionResult.java
+++ b/backend/src/main/java/core/services/PermissionResult.java
@@ -1,5 +1,8 @@
 package core.services;
 
+import core.api.models.auth.SimpleStatusResponse;
+import org.springframework.http.ResponseEntity;
+
 public class PermissionResult <T> extends ServiceResult<T> {
 
     private boolean hasPermissions;
@@ -30,11 +33,25 @@ public class PermissionResult <T> extends ServiceResult<T> {
         this.hasPermissions = hasPermissions;
     }
 
-    public boolean isHasPermissions() {
-        return hasPermissions;
+    public boolean isNoPermissions() {
+        return !hasPermissions;
     }
 
     public void setHasPermissions(boolean hasPermissions) {
         this.hasPermissions = hasPermissions;
     }
+
+    @Override
+    public ResponseEntity<?> mapToResponseEntity() {
+        if(isNoPermissions()) {
+            return ResponseEntity.status(403).body(new SimpleStatusResponse("failed"));
+        } else {
+            return super.mapToResponseEntity();
+        }
+    }
+
+    @Override
+    public boolean hasIssue() {
+        return super.hasIssue() || isNoPermissions();
+    }
 }
diff --git a/backend/src/main/java/core/services/ServiceExitCode.java b/backend/src/main/java/core/services/ServiceExitCode.java
index 93cbddd..452f52c 100644
--- a/backend/src/main/java/core/services/ServiceExitCode.java
+++ b/backend/src/main/java/core/services/ServiceExitCode.java
@@ -1,5 +1,8 @@
 package core.services;
 
+import core.api.models.auth.SimpleStatusResponse;
+import org.springframework.http.ResponseEntity;
+
 public enum ServiceExitCode {
 
     OK,
@@ -7,4 +10,13 @@ public enum ServiceExitCode {
     MISSING_ENTITY,
     INVALID_OPERATION,
     INVALID_PARAMETER;
+
+    public ResponseEntity<SimpleStatusResponse> mapToResponseEntity() {
+        return switch (this) {
+            case OK -> ResponseEntity.ok(new SimpleStatusResponse("success"));
+            case MISSING_ENTITY -> ResponseEntity.status(404).body(new SimpleStatusResponse("failed"));
+            case ENTITY_ALREADY_EXIST -> ResponseEntity.status(409).body(new SimpleStatusResponse("failed"));
+            case INVALID_OPERATION, INVALID_PARAMETER -> ResponseEntity.status(400).body(new SimpleStatusResponse("failed"));
+        };
+    }
 }
diff --git a/backend/src/main/java/core/services/ServiceResult.java b/backend/src/main/java/core/services/ServiceResult.java
index da9e03d..179b514 100644
--- a/backend/src/main/java/core/services/ServiceResult.java
+++ b/backend/src/main/java/core/services/ServiceResult.java
@@ -1,5 +1,8 @@
 package core.services;
 
+import core.api.models.auth.SimpleStatusResponse;
+import org.springframework.http.ResponseEntity;
+
 public class ServiceResult <T> {
 
     private ServiceExitCode exitCode;
@@ -34,4 +37,12 @@ public class ServiceResult <T> {
     public void setResult(T result) {
         this.result = result;
     }
+
+    public boolean hasIssue() {
+        return exitCode != ServiceExitCode.OK;
+    }
+
+    public ResponseEntity<?> mapToResponseEntity() {
+        return exitCode.mapToResponseEntity();
+    }
 }
diff --git a/backend/src/main/java/core/services/TaskSeriesService.java b/backend/src/main/java/core/services/TaskSeriesService.java
new file mode 100644
index 0000000..278ecf2
--- /dev/null
+++ b/backend/src/main/java/core/services/TaskSeriesService.java
@@ -0,0 +1,59 @@
+package core.services;
+
+import core.api.models.timemanager.tasks.repeatinginfo.DeadlineStrategy;
+import core.api.models.timemanager.tasks.repeatinginfo.TaskRepeatDayInfo;
+import core.api.models.timemanager.tasks.repeatinginfo.TaskRepeatWeekInfo;
+import core.entities.timemanager.Task;
+import core.entities.timemanager.TaskSerie;
+import core.repositories.timemanager.TaskRepository;
+import core.repositories.timemanager.TaskSeriesRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDate;
+
+@Service
+public class TaskSeriesService {
+
+    @Autowired private TaskRepository taskRepository;
+    @Autowired private TaskSeriesRepository taskSeriesRepository;
+
+    public ServiceExitCode createTaskSeries(Task rootTask, TaskRepeatWeekInfo taskRepeatInfo) {
+        return ServiceExitCode.OK;
+    }
+
+    public ServiceExitCode createTaskSeries(Task rootTask, TaskRepeatDayInfo taskRepeatInfo) {
+        if(taskRepeatInfo.getDeadlineStrategy() == DeadlineStrategy.FIX_DEADLINE) {
+            return ServiceExitCode.INVALID_PARAMETER;
+        }
+
+        LocalDate currentTaskDate = rootTask.getStartDate().plusDays(taskRepeatInfo.getOffset());
+        TaskSerie taskSerie = new TaskSerie();
+        int index = 1;
+        while(currentTaskDate.isBefore(taskRepeatInfo.getEndDate())) {
+            Task task = Task.cloneTask(rootTask);
+            task.setStartDate(currentTaskDate);
+            if(taskRepeatInfo.getDeadlineStrategy() == DeadlineStrategy.DEADLINE_EQUAL_START) {
+                task.setDeadline(currentTaskDate);
+            } else if(taskRepeatInfo.getDeadlineStrategy() == DeadlineStrategy.DEADLINE_FIT_START) {
+                task.setDeadline(currentTaskDate.plusDays(taskRepeatInfo.getOffset()-1));
+            }
+            taskSerie.addTask(task);
+            task.setTaskSerie(taskSerie);
+            task.setTaskName(task.getTaskName().replace("${i}", convertIndexToString(index)));
+            currentTaskDate = currentTaskDate.plusDays(taskRepeatInfo.getOffset());
+            index++;
+        }
+
+        taskRepository.saveAll(taskSerie.getTasks());
+        return ServiceExitCode.OK;
+    }
+
+    public static String convertIndexToString(int index) {
+        if(index < 10) {
+            return "0" + index;
+        } else {
+            return String.valueOf(index);
+        }
+    }
+}
diff --git a/openapi.yaml b/openapi.yaml
index 2001027..b83f363 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -2073,6 +2073,52 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/SimpleStatusResponse'
+  /tasks/{taskID}/taskseries/daily:
+    post:
+      security:
+        - API_TOKEN: []
+      tags:
+        - taskseries
+      description: Creates a daily repeating task
+      summary: daily repeating task creation
+      parameters:
+        - name: taskID
+          in: path
+          description: internal id of taskgroup
+          required: true
+          schema:
+            type: number
+            example: 1
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/TaskRepeatDayInfo'
+      responses:
+        200:
+          description: Operation successfull
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/SimpleStatusResponse'
+        403:
+          description: No permission
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/SimpleStatusResponse'
+        404:
+          description: Task not found
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/SimpleStatusResponse'
+        400:
+          description: Invalid deadlineStrategy
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/SimpleStatusResponse'
 
       
 components:
@@ -2779,4 +2825,20 @@ components:
           example: password
         ntfy_token:
           type: string
-          description: token to ntfy useraccount
\ No newline at end of file
+          description: token to ntfy useraccount
+    TaskRepeatDayInfo:
+      required:
+        - offset
+        - deadlineStrategy
+      additionalProperties: false
+      properties:
+        offset:
+          type: number
+          description: number repeating days
+          example: 7
+          minimum: 1
+        deadlineStrategy:
+          type: string
+          enum:
+            - DEADLINE_EQUAL_START
+            - DEADLINE_FIT_START
\ No newline at end of file