How To Fix UCS0071 - The current task group contains predecessor relationships

SAP Error Message - Details

• Message type: E = Error

• Message class: UCS0 - Messages for Status Management

• Message number: 071

• Message text: The current task group contains predecessor relationships

What causes this issue?

The task group contains tasks that have predecessor and/or successor
relationships between each other. Therefore, parallel execution of these
tasks is not possible.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UCS0071 - The current task group contains predecessor relationships ?

  The SAP error message UCS0071 indicates that there are predecessor relationships within the current task group, which is causing an issue when trying to perform a certain action, such as scheduling or modifying tasks in a project.
  Cause:
  The error typically arises when:
  
  You are trying to perform an operation that is not allowed due to existing dependencies between tasks in the task group.
  The task group contains tasks that are interdependent, meaning that one task must be completed before another can start, which can create a conflict when trying to modify or delete tasks.
  
  Solution:
  To resolve the UCS0071 error, you can take the following steps:
  
  
  Review Task Dependencies: Check the task group for any predecessor relationships. You can do this by navigating to the project management or task management module in SAP and reviewing the task dependencies.
  
  
  Modify Dependencies: If you find that there are unnecessary predecessor relationships, you can modify or remove them. This may involve:
  
  Changing the task sequence.
  Deleting or adjusting the predecessor links.
  
  
  
  Reorganize Task Group: If the task group is too complex, consider reorganizing the tasks into smaller groups or breaking down the project into more manageable parts.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific instructions on managing task dependencies and groups.
  
  
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP's support resources for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP that can help you manage tasks and dependencies, such as CJ20N (Project Builder) or CJ02 (Change Project).
  Project Management Best Practices: Understanding project management principles can help you better manage task dependencies and avoid similar issues in the future.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or patches that could resolve the issue.
  
  By following these steps, you should be able to address the UCS0071 error and continue with your project management tasks in SAP.