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

CM011 - Overview

• 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.

CM011 - Details

• 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