How To Fix CM011 - A change number is required for maintaining the bill of material.

SAP Error Message - Details

• Message type: E = Error

• Message class: CM - Task list messages: Material component allocations

• Message number: 011

• Message text: A change number is required for maintaining the bill of material.

What causes this issue?

This bill of material has previously been changed using a change
number. This means that in order to change it again, you first need to
enter a change number.

How to fix this error?

Enter a change number on the initial screen of the transaction.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM011 - A change number is required for maintaining the bill of material. ?

  The SAP error message CM011 indicates that a change number is required when trying to maintain a Bill of Material (BOM). This is a common requirement in SAP to ensure that changes to BOMs are tracked and managed properly, especially in environments where version control and change management are critical.
  Cause:
  The error occurs when:
  
  You are trying to create, change, or delete a BOM without specifying a change number.
  The system is configured to require a change number for BOM changes, which is often the case in industries that need strict version control (like manufacturing, pharmaceuticals, etc.).
  
  Solution:
  To resolve the CM011 error, you need to provide a valid change number when attempting to maintain the BOM. Here are the steps to do this:
  
  
  Create a Change Number:
  
  Go to the transaction code CC01 (Create Change Number).
  Fill in the required fields, such as the change number type, description, and validity dates.
  Save the change number.
  
  
  
  Use the Change Number:
  
  When you are in the BOM maintenance transaction (like CS01 for creating a BOM, CS02 for changing a BOM, or CS03 for displaying a BOM), enter the change number you created in the appropriate field.
  Proceed with your changes to the BOM.
  
  
  
  Check Configuration:
  
  If you believe that a change number should not be required for your specific scenario, you may need to check the configuration settings in the SAP system. This can be done by:
  
  Going to the transaction code SPRO (SAP Project Reference Object).
  Navigating to Production > Basic Data > Bill of Material > Change Management > Define Change Number Types.
  Here, you can review the settings for change number requirements and adjust them if necessary (note that this should be done with caution and typically requires appropriate authorization).
  
  
  
  
  
  Related Information:
  
  Change Management: Understanding how change management works in SAP is crucial. Change numbers help in tracking changes and maintaining historical data.
  BOM Types: Different types of BOMs (like production BOMs, sales BOMs, etc.) may have different requirements regarding change numbers.
  Authorization: Ensure that you have the necessary authorizations to create change numbers and maintain BOMs in the system.
  Documentation: Refer to SAP documentation or help files for more detailed information on BOM management and change numbers.
  
  By following these steps, you should be able to resolve the CM011 error and successfully maintain your BOM in SAP.