How To Fix MD765 - WBS BOM for production lot & already exists

MD765 - Overview

• Message type: E = Error

• Message class: MD - Material Requirements Planning (MRP)

• Message number: 765

• Message text: WBS BOM for production lot & already exists

What causes this issue?

Production lot &V1& already has a WBS BOM. If you specify a reference
production lot for this production lot, the system will not use the
already existing WBS BOM. Instead, the system uses the WBS BOM of the
reference production lot.

Error message extract from SAP system. Copyright SAP SE.

MD765 - Details

• The SAP error message MD765 indicates that there is an issue with the Bill of Materials (BOM) for a Work Breakdown Structure (WBS) element in relation to a production lot. Specifically, it means that a BOM for the specified production lot and WBS already exists, which can prevent the creation of a new BOM or the modification of an existing one.
  
  Cause:
  
  Duplicate BOM Entry: The most common cause of this error is that a BOM for the specified production lot and WBS element has already been created in the system.
  Incorrect Data Entry: There may be a mistake in the data entry, such as using the wrong production lot or WBS element.
  System Configuration: There could be configuration settings in SAP that enforce unique BOM entries for specific production lots and WBS elements.
  
  
  Solution:
  
  
  Check Existing BOMs: 
  
  Use transaction code CS03 (Display BOM) to check if a BOM already exists for the specified production lot