How To Fix CCMM191 - Structure gap (&1 &2 &3) has been dismantled by another user

SAP Error Message - Details

• Message type: E = Error

• Message class: CCMM - Message Class for A&D CCM

• Message number: 191

• Message text: Structure gap (&1 &2 &3) has been dismantled by another user

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CCMM191 - Structure gap (&1 &2 &3) has been dismantled by another user ?

  The SAP error message CCMM191 indicates that a structure gap (which is a reserved space in a structure for future use) has been dismantled or modified by another user while you were trying to access or modify it. This typically occurs in the context of SAP's Capacity Planning or Production Planning modules, where multiple users may be working on the same data simultaneously.
  Cause:
  
  Concurrent Access: The primary cause of this error is that two or more users are trying to modify the same structure or data at the same time. When one user dismantles or changes the structure, it can lead to inconsistencies for other users who are trying to access it.
  Locking Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. If a user has locked a structure and another user tries to access it, the second user may receive this error if the first user modifies the structure.
  
  Solution:
  
  Refresh the Data: If you encounter this error, try refreshing your session or reloading the data. This can help you get the latest version of the structure.
  Check for Other Users: Communicate with your team to see if someone else is working on the same structure. If possible, coordinate to avoid simultaneous modifications.
  Wait and Retry: If the structure is being modified by another user, you may need to wait until they finish their changes before trying again.
  Transaction Logs: Check transaction logs or change logs to see what modifications were made and by whom. This can help you understand the context of the error.
  Contact Support: If the issue persists and is affecting your work, consider reaching out to your SAP support team or system administrator for assistance.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  User Documentation: Review the user documentation for the specific module you are working in (e.g., Capacity Planning, Production Planning) to understand how structure gaps are managed and any best practices for avoiding conflicts.
  Training: If this error occurs frequently, consider training sessions for users to understand how to work collaboratively in the system and avoid conflicts.
  
  By following these steps, you should be able to resolve the CCMM191 error and continue your work in SAP.