How To Fix MU123 - A procurement material already exists for order UoM &1 and sales mat. &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: MU - Maintenance of structured materials

• Message number: 123

• Message text: A procurement material already exists for order UoM &1 and sales mat. &2.

What causes this issue?

You have tried to create a procurement material based on sales material
&V2& for order unit of measure &V1&.
This material is used in the context of logistical materials as a
procurement material. Another procurement material has already been
created with UoM &V1&.

System Response

To avoid a data inconsistency in the material master, the system stops
processing and does not allow you to create the material master data.

How to fix this error?

Choose a different order unit of measure for the procurement material
you want to create.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MU123 - A procurement material already exists for order UoM &1 and sales mat. &2. ?

  The SAP error message MU123 indicates that there is a conflict related to the procurement of a material in a specific unit of measure (UoM) and sales material. This typically occurs when there is an attempt to create or modify a procurement document (like a purchase order or production order) for a material that already has an existing procurement record in the system.
  Cause:
  
  
  Existing Procurement Record: The error arises when there is already a procurement record for the specified material in the given unit of measure. This could be due to:
  
  An existing purchase order or production order for the same material.
  A mismatch in the unit of measure being used for the procurement and the one that is already recorded.
  The material might be set up in a way that it does not allow multiple procurement records for the same UoM.
  
  
  
  Configuration Issues: There may be configuration settings in the material master or the purchasing info records that restrict the creation of multiple procurement records for the same material.
  
  
  Solution:
  
  
  Check Existing Records: 
  
  Review the existing procurement documents for the material in question. You can do this by using transaction codes like ME23N (Display Purchase Order) or CO03 (Display Production Order) to see if there are any active orders for the material.
  
  
  
  Verify Unit of Measure: 
  
  Ensure that the unit of measure you are trying to use matches the one that is already set up in the system. You can check the material master data (transaction MM03) to see the allowed units of measure.
  
  
  
  Modify or Delete Existing Orders: 
  
  If you find that there is an existing procurement record that is no longer needed, you may consider modifying or deleting it, provided that it is permissible based on your business processes.
  
  
  
  Consult Configuration: 
  
  If the issue persists, consult with your SAP configuration team to review the settings related to the material master and procurement processes. They may need to adjust settings that govern how procurement records are created and managed.
  
  
  
  Error Handling: 
  
  If this error occurs frequently, consider implementing error handling procedures or user training to ensure that users are aware of the constraints related to procurement records.
  
  
  
  Related Information:
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  MM03: Display Material Master
  ME23N: Display Purchase Order
  CO03: Display Production Order
  MB52: List Warehouse Stocks on Hand
  
  
  
  Material Master Data: Understanding the structure of the material master and how units of measure are defined can help prevent this error in the future.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message, as SAP frequently updates its software to address bugs and improve functionality.
  
  
  By following these steps, you should be able to resolve the MU123 error and prevent it from occurring in the future.