How To Fix 29771 - Standard BOM & & & already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: 29 - Bills of Material

• Message number: 771

• Message text: Standard BOM & & & already exists

What causes this issue?

You want to create a standard BOM for standard object &V1& with usage
&V2&.
A BOM already exists for this standard object and usage. You cannot
extend a standard a standard BOM.

How to fix this error?

Check whether the standard BOM is suitable for standard object &V1& and
usage &V2&. If it is not, you need to create the BOM for another
standard object.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 29771 - Standard BOM & & & already exists ?

  The SAP error message 29771, which states "Standard BOM & & & already exists," typically occurs when you are trying to create a new Bill of Materials (BOM) in SAP, but a standard BOM with the same key already exists in the system. This can happen in various scenarios, such as when you are trying to create a BOM for a material that already has a standard BOM defined.
  Cause:
  
  Duplicate BOM Entry: The most common cause is that a standard BOM for the specified material already exists in the system.
  Incorrect BOM Type: You may be trying to create a BOM with a type that is already in use for that material.
  Data Entry Error: There may be a mistake in the data you are entering, leading to a conflict with existing records.
  
  Solution:
  
  Check Existing BOMs: Before creating a new BOM, check if a standard BOM already exists for the material. You can do this using transaction codes like CS03 (Display BOM) or CS12 (BOM Comparison).
  Use Existing BOM: If a BOM already exists and meets your requirements, consider using or modifying the existing BOM instead of creating a new one.
  Change BOM Type: If you need to create a different type of BOM (e.g., alternative BOM), ensure that you are using the correct BOM type that does not conflict with existing entries.
  Delete or Archive Existing BOM: If the existing BOM is no longer needed, you may consider deleting or archiving it, but ensure that this action is in line with your organization's data management policies.
  Consult Documentation: Review SAP documentation or consult with your SAP administrator for specific guidelines related to BOM management in your organization.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CS01 (Create BOM), CS02 (Change BOM), and CS03 (Display BOM).
  BOM Types: Understand the different types of BOMs (e.g., standard BOM, alternative BOM, etc.) and their purposes.
  User Authorizations: Ensure that you have the necessary authorizations to create or modify BOMs in the system.
  SAP Notes: Check for any relevant SAP Notes that may address this error or provide additional guidance.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP's support resources for further assistance.