How To Fix 29040 - Change number & does not allow you to change BOMs

29040 - Overview

• Message type: E = Error

• Message class: 29 - Bills of Material

• Message number: 040

• Message text: Change number & does not allow you to change BOMs

What causes this issue?

You want to use change number &V1& to change a BOM or to create a
variant for an existing BOM. However, this change number does not allow
changes to BOMs.
One of the following situations triggered this error message:
In the change master, the corresponding object type (eg. BOM,
routing/plan) is not active, so it is not possible to create or change
objects with this object type using this change number.
The corresponding object type is currently locked for the creation of
new data or changes.
Change number &V1& is the number of an ECR. In this case, an object
management record is required for the BOM. However, no object management
records exist for the selected ECR.

How to fix this error?

Check your entries.
If you really want to create your variant or make your changes using
this change number, consult your system manager responsible for change
master records to get the change number adapted to suit.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 29040 - Change number & does not allow you to change BOMs ?

  The SAP error message 29040, which states "Change number & does not allow you to change BOMs," typically occurs when you are trying to make changes to a Bill of Materials (BOM) while a change number is active that restricts modifications. This is a part of the change management process in SAP, which is designed to control changes to BOMs and other master data.
  
  Cause:
  
  Active Change Number: The change number you are using is set to prevent changes to the BOM. This is often the case when the change number is in a status that does not allow modifications (e.g., "Released" or "Closed").
  Change Number Configuration: The configuration of the change number may have been set to restrict changes to certain objects, including BOMs.
  Authorization Issues: The user may not have the necessary authorizations to make changes to the BOM under the specified change number.
  
  
  Solution:
  
  
  Check Change Number Status: Verify the status of the