How To Fix 29654 - BOM category & is already linked to another object type

SAP Error Message - Details

• Message type: E = Error

• Message class: 29 - Bills of Material

• Message number: 654

• Message text: BOM category & is already linked to another object type

What causes this issue?

You want to link BOM category &V1& to an object type.
You cannot link a BOM category to more than one object type, so you can
no longer create this link.

How to fix this error?

Please check the links between BOM categories and object types.
Correct these links if appropriate.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 29654 - BOM category & is already linked to another object type ?

  The SAP error message 29654, which states that "BOM category & is already linked to another object type," typically occurs when you are trying to create or modify a Bill of Materials (BOM) in SAP, and the BOM category you are using is already associated with a different object type. This can happen in various scenarios, such as when you are trying to create a BOM for a material that is already linked to a different BOM category or object.
  Cause:
  
  Existing Linkage: The BOM category you are trying to use is already linked to another object type (e.g., a different material or a different BOM).
  Incorrect BOM Category: You may be using the wrong BOM category for the material you are trying to create or modify.
  Data Integrity Issues: There may be data integrity issues in the system, where the BOM category is incorrectly assigned or referenced.
  
  Solution:
  
  Check Existing BOMs: Verify if the BOM category is already linked to another object. You can do this by checking the existing BOMs in the system using transaction codes like CS03 (Display BOM) or CS02 (Change BOM).
  Use the Correct BOM Category: Ensure that you are using the correct BOM category for the material you are working with. You can check the allowed BOM categories for a material in the material master data.
  Delete or Change Existing Link: If the BOM category is indeed linked to another object and you need to use it for your current object, you may need to delete or change the existing BOM that is using that category. Be cautious with this step, as it may affect other processes.
  Consult Documentation: Review SAP documentation or help files related to BOM categories to understand the specific requirements and constraints for the categories you are working with.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or SAP directly for assistance.
  
  Related Information:
  
  BOM Categories: Different BOM categories (e.g., production BOM, sales BOM, engineering BOM) serve different purposes and have specific rules regarding their usage.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), and CS03 (Display BOM) to manage BOMs effectively.
  Material Master: Ensure that the material master data is correctly set up, as it can impact BOM creation and management.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.