How To Fix MILL_MM_OB004 - Purchase order &1/&2 already references &4 &3

SAP Error Message - Details

• Message type: E = Error

• Message class: MILL_MM_OB - Original Batch

• Message number: 004

• Message text: Purchase order &1/&2 already references &4 &3

What causes this issue?

An original batch has already been created for a purchase order item.
You tried to create another orginal batch for the same purchase order
item.

System Response

An error message appears. You cannot assign more than one original
batch to a purchase order item.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MILL_MM_OB004 - Purchase order &1/&2 already references &4 &3 ?

  The SAP error message MILL_MM_OB004 indicates that a purchase order (PO) is attempting to reference a material document that has already been linked to another purchase order. This typically occurs in the context of materials management and procurement processes within SAP.
  Cause:
  The error arises when:
  
  You are trying to create or modify a purchase order that references a material document (like a goods receipt) that is already associated with another purchase order.
  This can happen if there are duplicate entries or if the same material is being processed in multiple purchase orders simultaneously.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Purchase Orders:
  
  Review the existing purchase orders to see which one is already referencing the material document. You can do this by using transaction codes like ME23N (Display Purchase Order) or ME2N (Purchase Orders by Vendor).
  
  
  
  Identify the Material Document:
  
  Use transaction code MB03 (Display Material Document) to check the details of the material document that is causing the conflict. This will help you understand which purchase order is already linked to it.
  
  
  
  Modify the Purchase Order:
  
  If you need to reference the same material in a new purchase order, consider modifying the existing purchase order instead of creating a new one.
  If the new purchase order is necessary, ensure that it references a different material document that is not already linked to another purchase order.
  
  
  
  Consult with Your Team:
  
  If you are unsure about the implications of modifying or deleting a purchase order, consult with your procurement or materials management team to ensure that you are following the correct procedures.
  
  
  
  Check for System Configuration:
  
  In some cases, the error may be related to system configuration or settings. If the issue persists, it may be necessary to consult with your SAP Basis or technical team to investigate further.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME21N (Create Purchase Order), ME22N (Change Purchase Order), ME23N (Display Purchase Order), and MB03 (Display Material Document).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional insights or solutions.
  Documentation: Review SAP documentation related to materials management and procurement processes to understand the underlying business logic and system behavior.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.