How To Fix CMT2028 - Predecessor is flagged for deletion

SAP Error Message - Details

• Message type: E = Error

• Message class: CMT2 - Add-On Version: Message Class in CM Environment

• Message number: 028

• Message text: Predecessor is flagged for deletion

What causes this issue?

You are trying to create a successor via an API. However, the
predecessor has already been deleted, although the deletion of the
predecessor has not yet been posted in the database.

System Response

The successor cannot be created.

How to fix this error?

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

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 CMT2028 - Predecessor is flagged for deletion ?

  The SAP error message CMT2028, which states "Predecessor is flagged for deletion," typically occurs in the context of project management or production planning when you are trying to create or modify a task or activity that has a predecessor that has been marked for deletion. This can happen in various modules, such as SAP Project System (PS) or SAP Production Planning (PP).
  Cause:
  
  Predecessor Marked for Deletion: The predecessor task or activity that you are trying to link to your current task has been flagged for deletion in the system. This means that it is no longer considered valid or active.
  Data Integrity Issues: The system is designed to maintain data integrity, and linking to a deleted predecessor would violate this principle.
  Configuration Issues: There may be configuration settings in the project or production planning that are causing this issue.
  
  Solution:
  
  
  Check Predecessor Status: 
  
  Go to the predecessor task/activity in the system and check its status. If it is indeed flagged for deletion, you will need to either:
  
  Unflag the Deletion: If the predecessor is still relevant, you can unflag it for deletion. This usually involves changing the status of the predecessor in the relevant transaction (e.g., using transaction codes like CJ20N for project management).
  Replace the Predecessor: If the predecessor is no longer needed, you should replace it with a valid predecessor that is not flagged for deletion.
  
  
  
  
  
  Review Project Structure: 
  
  Ensure that the project structure is intact and that all necessary tasks and activities are active and correctly linked.
  
  
  
  Consult Documentation: 
  
  Review any relevant documentation or guidelines for your specific SAP implementation to understand how to manage predecessors and their statuses.
  
  
  
  Check User Authorizations: 
  
  Ensure that you have the necessary authorizations to modify the predecessor tasks or activities.
  
  
  
  Contact SAP Support: 
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CJBW (Project Overview), or others depending on your specific module.
  SAP Notes: Search for SAP Notes related to error CMT2028 for any specific fixes or recommendations provided by SAP.
  Training and Documentation: Consider training sessions or documentation on project management or production planning in SAP to better understand how to manage tasks and their relationships.
  
  By following these steps, you should be able to address the CMT2028 error and ensure that your project or production planning activities are correctly set up.