How To Fix MPN004 - MPN material & not assigned to material &

SAP Error Message - Details

• Message type: E = Error

• Message class: MPN - System Messages re Manufacturer Part Number Management

• Message number: 004

• Message text: MPN material & not assigned to material &

What causes this issue?

Each <DS:GLOS.3526C020AFAB52B9E10000009B38F974>MPN material</> must be
assigned to just one of your firm's own, inventory-managed materials
via material master record maintenance.

System Response

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

How to fix this error?

Choose an MPN material that is assigned to your firm's own material.
(In doing so, you can make use of the input help facility.)

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MPN004 - MPN material & not assigned to material & ?

  The SAP error message MPN004 typically indicates that a Material Planning Number (MPN) is not assigned to a specific material in the system. This error can occur in various scenarios, such as during the creation of purchase orders, when trying to use MPNs in procurement processes, or when performing material master data maintenance.
  Cause:
  The error message MPN004 is triggered when:
  
  The MPN you are trying to use is not linked to the material in the material master.
  The MPN is not maintained in the relevant MPN data for the material.
  There may be a mismatch in the MPN data or the material number being referenced.
  
  Solution:
  To resolve the MPN004 error, you can follow these steps:
  
  
  Check MPN Assignment:
  
  Go to the material master record for the material in question (Transaction Code: MM03).
  Navigate to the "Purchasing" view and check if the MPN is assigned correctly.
  
  
  
  Maintain MPN Data:
  
  If the MPN is not assigned, you can assign it by going to the MPN data section in the material master.
  Use Transaction Code: MM02 to edit the material master and add the MPN under the relevant purchasing data.
  
  
  
  Verify MPN Configuration:
  
  Ensure that the MPN is correctly configured in the system. You can check this in the MPN master data (Transaction Code: MPN1).
  Make sure that the MPN is active and correctly linked to the supplier and material.
  
  
  
  Check for Data Consistency:
  
  Ensure that there are no inconsistencies in the data. Sometimes, data might be missing or incorrectly entered, leading to this error.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to MPNs and material master data for additional guidance.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information:
  
  MPN (Manufacturer Part Number): This is a unique identifier assigned by manufacturers to identify their products. In SAP, MPNs are used to facilitate procurement processes and ensure that the correct parts are ordered.
  Material Master Data: This is a central repository of information related to materials in SAP, which includes purchasing, sales, and inventory data.
  Transaction Codes:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  MPN1: Maintain MPN Data
  
  
  
  By following these steps, you should be able to resolve the MPN004 error and ensure that your materials are correctly linked to their respective MPNs in SAP.