Message type: E = Error
Message class: DPR_TASK - Messages for Tasks
Message number: 021
Message text: You cannot create a subtask for task &1
Possible causes:
The project type does not allow a task hierarchy (see Customizing for
<LS>Project Management</> under <LS>Define Project Types</>).
You have selected <LS>With Summary Tasks</> for the task hierarchy in
the project type and one of the following points applies:
You have already entered data relevant to the execution of the task
(e.g. planned work)
You have assigned roles
You have entered qualifications
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
If you selected a project type that allows summary tasks, choose one of
the following options:
Create a new task at the same level and move the existing task to the
new task.
Delete the execution-relevant data from the task, and delete the role
and qualification assignments. Then create a subtask.
Error message extract from SAP system. Copyright SAP SE.
DPR_TASK021
- You cannot create a subtask for task &1 ?The SAP error message DPR_TASK021, which states "You cannot create a subtask for task &1," typically occurs in the context of project management within the SAP system, particularly when using the SAP Project System (PS) or SAP Portfolio and Project Management (PPM) modules. This error indicates that the task you are trying to create a subtask for does not meet certain criteria or conditions. Causes: Task Type Restrictions: The task you are trying to create a subtask for may not be of a type that allows for subtasks. For example, certain predefined task types may not support the creation of subtasks. Task Status: The status of the parent task may not allow for the creation of subtasks. For instance, if the task is completed or closed, you may not be able to add subtasks. Hierarchy Limitations: There may be restrictions on the hierarchy level of tasks. Some configurations may limit how many levels of
Get instant SAP help. Sign up for our Free Essentials Plan.
DPR_TASK020
Cannot change external tasks: Action &1 is not possible
What causes this issue? All tasks that are linked to the current task by a relationship must be in change mode for action &V1&. However, at l...
DPR_TASK019
Cannot change tasks: Action &1 is not possible
What causes this issue? All subtasks must be in change mode for action &V1&. However, at least one subtask cannot be locked and therefore it ...
DPR_TASK022
Task &1 has not been released: Actual data cannot be changed
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
DPR_TASK024
Dates of mirrored task &1 were changed in the original task
What causes this issue? The dates of the mirrored task &V1& (&V2&) are not up-to-date.System Response The dates of the original task...
Click on this link to search all SAP messages.