How To Fix /SAPAPO/DC_MSG138 - Changes not allowed in this table

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/DC_MSG -

• Message number: 138

• Message text: Changes not allowed in this table

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 /SAPAPO/DC_MSG138 - Changes not allowed in this table ?

  The SAP error message /SAPAPO/DC_MSG138 Changes not allowed in this table typically occurs in the context of SAP Advanced Planning and Optimization (APO) when a user attempts to make changes to a table or data structure that is not permitted due to the current state of the data or the configuration of the system.
  Cause:
  
  Data Locking: The table may be locked for editing due to ongoing processes or transactions. This can happen if another user or process is currently using the data.
  Status of the Object: The object you are trying to modify may be in a status that does not allow changes (e.g., it may be in a "completed" or "frozen" state).
  Authorization Issues: The user may not have the necessary authorizations to make changes to the specific table or data.
  System Configuration: Certain tables in APO are configured to be read-only in specific contexts or scenarios, preventing any modifications.
  
  Solution:
  
  Check Locks: Use transaction code SM12 to check for any locks on the table or data you are trying to modify. If you find locks, you may need to wait for the other processes to complete or contact the user who has the lock.
  Review Object Status: Verify the status of the object you are trying to change. If it is in a non-editable state, you may need to change its status or wait until it is eligible for modification.
  Authorization Check: Ensure that you have the necessary authorizations to make changes. You may need to contact your system administrator to verify your permissions.
  Consult Documentation: Review the relevant SAP documentation or configuration settings to understand if the table is intended to be read-only in your scenario.
  Use Appropriate Transactions: Ensure you are using the correct transaction codes or methods to make changes. Some changes may need to be done through specific transactions designed for that purpose.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for lock entries), SE11 (for data dictionary), and SE16 (for table display).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide specific guidance or solutions for known problems.
  Support: If the issue persists, consider reaching out to SAP support or your internal IT support team for further assistance.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.