How To Fix CMT2050 - Definition number of predecessor and successor must be identical

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 050

• Message text: Definition number of predecessor and successor must be identical

What causes this issue?

You want to create a successor via an API. Different numbers were
copied for the configuration definition for predecessors and
successors. This is not permissible.

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 CMT2050 - Definition number of predecessor and successor must be identical ?

  The SAP error message CMT2050, which states "Definition number of predecessor and successor must be identical," typically occurs in the context of project management or production planning within SAP. This error indicates that there is a mismatch in the definition numbers of predecessor and successor activities or tasks in a network or project structure.
  Cause:
  
  
  Mismatch in Definition Numbers: The most common cause of this error is that the predecessor and successor activities have been defined with different definition numbers. In SAP, each activity or task in a project network is assigned a unique definition number, and these must match for the predecessor-successor relationship to be valid.
  
  
  Incorrect Configuration: There may be an issue with how the project or network has been configured, leading to inconsistencies in the definition numbers.
  
  
  Data Entry Errors: Manual data entry errors can also lead to this issue, where the wrong definition number is assigned to either the predecessor or successor.
  
  
  Solution:
  
  
  Check Definition Numbers: Review the definition numbers of both the predecessor and successor activities. Ensure that they are identical. You can do this by navigating to the relevant project or network in SAP and checking the details of the activities.
  
  
  Correct the Mismatch: If you find that the definition numbers are different, you will need to correct them. This may involve changing the definition number of one of the activities to match the other.
  
  
  Review Project Configuration: If the issue persists, review the overall configuration of the project or network. Ensure that all settings are correct and that there are no other inconsistencies.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on how to properly set up predecessor and successor relationships in your specific module (e.g., Project System, Production Planning).
  
  
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for assistance.
  
  
  Related Information:
  
  Transaction Codes: You may need to use specific transaction codes to view or edit project networks, such as CN21 (Create Network), CN22 (Change Network), or CN03 (Display Network).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Training and Documentation: Ensure that users involved in project management or production planning are adequately trained on how to manage activities and their relationships within SAP.
  
  By following these steps, you should be able to identify and resolve the CMT2050 error in SAP.