How To Fix KP555 - No longer possible to change allocation cost element &1 to &2 with &3

SAP Error Message - Details

• Message type: E = Error

• Message class: KP - CO-OM Planning

• Message number: 555

• Message text: No longer possible to change allocation cost element &1 to &2 with &3

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message KP555 - No longer possible to change allocation cost element &1 to &2 with &3 ?

  The SAP error message KP555 indicates that there is an issue with changing the allocation cost element in a cost allocation process. This error typically arises in the context of controlling (CO) when trying to modify cost elements that are already assigned or used in a certain context, such as in a cost center or internal order.
  Cause:
  The error message KP555 can occur due to several reasons:
  
  Cost Element Status: The cost element you are trying to change may be in a status that does not allow modifications. For example, it might be locked or already posted to.
  Allocation Type: The allocation type you are trying to use may not be compatible with the existing settings or data.
  Period Closing: If the period is closed for posting, changes to cost elements may not be allowed.
  Dependencies: There may be dependencies or relationships with other cost elements or objects that prevent the change.
  
  Solution:
  To resolve the KP555 error, you can take the following steps:
  
  Check Cost Element Status: Verify the status of the cost elements involved. Ensure that they are not locked or in a state that prevents changes.
  Review Allocation Settings: Check the allocation settings and ensure that the type of allocation you are trying to perform is valid for the cost elements involved.
  Open Posting Period: If the posting period is closed, you may need to open it to allow changes. This typically requires authorization and should be done with caution.
  Consult Documentation: Review SAP documentation or help resources for specific details on the cost elements and allocation types you are working with.
  Transaction Codes: Use transaction codes like KP26 (Change Plan Data) or KSU5 (Change Actual Data) to review and modify the relevant data.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with relevant transaction codes in the CO module, such as KP06 (Change Plan Data) and KSB1 (Cost Centers: Actual Line Items).
  User Authorizations: Ensure that you have the necessary authorizations to make changes to cost elements and allocations.
  
  By following these steps, you should be able to identify the root cause of the KP555 error and implement a suitable solution.