How To Fix CP541 - Only enter a sequence key with object category O or U

SAP Error Message - Details

• Message type: E = Error

• Message class: CP - Task list messages: Core data

• Message number: 541

• Message text: Only enter a sequence key with object category O or U

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CP541 - Only enter a sequence key with object category O or U ?

  The SAP error message CP541 ("Only enter a sequence key with object category O or U") typically occurs in the context of SAP's Controlling (CO) module, particularly when dealing with internal orders or other controlling objects. This error indicates that the system expects a specific type of sequence key based on the object category being used.
  Cause:
  The error arises when a user attempts to enter a sequence key that is not compatible with the object category of the controlling object being processed. The object categories "O" (for internal orders) and "U" (for project-related costs) are the only categories that allow for the entry of sequence keys. If the object category is something else (like "C" for cost centers or "P" for profit centers), the system will reject the entry of a sequence key.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Object Category: Verify the object category of the controlling object you are working with. Ensure that it is either "O" (internal order) or "U" (project).
  
  
  Correct Sequence Key: If you are using a sequence key, ensure that it is appropriate for the object category. If the object category does not support sequence keys, remove the sequence key from your entry.
  
  
  Review Configuration: If you believe the object category should allow for a sequence key, check the configuration settings in the SAP system. You may need to consult with your SAP administrator or a functional consultant to ensure that the settings are correct.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for more information on the specific object categories and their allowed attributes.
  
  
  Testing: After making the necessary adjustments, test the transaction again to ensure that the error no longer occurs.
  
  
  Related Information:
  
  Transaction Codes: This error may occur in various transaction codes related to internal orders, such as KO01 (Create Internal Order), KO02 (Change Internal Order), or KOB1 (Order Report).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Authorization: Ensure that you have the necessary authorizations to work with the specific object categories and sequence keys.
  
  If the issue persists after following these steps, it may be beneficial to engage with your SAP support team for further investigation.