How To Fix DFS_FE_COMMON458 - Assignment source & is itself an op/ex.; cannot make assignment to op/ex

SAP Error Message - Details

• Message type: E = Error

• Message class: DFS_FE_COMMON - Message Class for DFS Force Element

• Message number: 458

• Message text: Assignment source & is itself an op/ex.; cannot make assignment to op/ex

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DFS_FE_COMMON458 - Assignment source & is itself an op/ex.; cannot make assignment to op/ex ?

  The SAP error message DFS_FE_COMMON458 typically occurs in the context of SAP's Project System (PS) or Production Planning (PP) modules. This error indicates that there is an issue with the assignment of a source (like a cost center, internal order, or project) to an operation or external activity. Specifically, it suggests that the source you are trying to assign is already an operation or external activity, and therefore cannot be assigned again.
  Cause:
  
  Duplicate Assignment: The source you are trying to assign is already assigned as an operation or external activity in the system.
  Incorrect Configuration: There may be a configuration issue in the project or order structure that is causing the system to misinterpret the assignment.
  Data Integrity Issues: There could be inconsistencies in the data, such as missing or incorrect master data for the operations or activities.
  
  Solution:
  
  Check Existing Assignments: Review the existing assignments for the operation or external activity. Ensure that the source you are trying to assign is not already assigned.
  Correct the Assignment: If the source is already assigned, you may need to either remove the existing assignment or choose a different source that is not already in use.
  Review Configuration: Check the configuration settings in the project or order to ensure that they are set up correctly. This may involve looking at the project structure, work breakdown structure (WBS), or order types.
  Data Consistency Check: Run data consistency checks to identify any discrepancies in the master data or assignment data. This can help in identifying any underlying issues that may be causing the error.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to your version of SAP and the context in which the error occurs.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CJ20N (Project Builder) or CO02 (Change Production Order) to review and modify assignments.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles and Authorizations: Ensure that you have the necessary authorizations to make changes to assignments in the system.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the relevant module.