How To Fix MN486 - Unit of measure for item &2 of supplier billing document &1 is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: MN - Message class for subsequent settlement (Purchasing)

• Message number: 486

• Message text: Unit of measure for item &2 of supplier billing document &1 is missing

What causes this issue?

The supplier business volume update should have been carried out for
item &V2& of purchasing document &V1&. However, a communication
structure for updating in the Logistics Information System was not
passed on by the invoking program.

System Response

Updating was not carried out for purchasing document &V1&, item &V2&.

How to fix this error?

This is probably due to an internal program error. Therefore, you should
contact your ystem administrator.
The error occurred in function module &V3&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MN486 - Unit of measure for item &2 of supplier billing document &1 is missing ?

  The SAP error message MN486 indicates that there is a missing unit of measure (UoM) for a specific item in a supplier billing document. This error typically arises during the processing of invoices or billing documents when the system cannot find the required unit of measure for one or more items.
  Cause:
  
  Missing Unit of Measure: The most common cause is that the unit of measure for the item in the supplier billing document is not defined or is missing in the material master or the billing document itself.
  Incorrect Material Master Data: The material associated with the item may not have a valid unit of measure defined in its master data.
  Data Migration Issues: If data was migrated from another system, there may have been issues that resulted in missing or incorrect unit of measure data.
  Configuration Issues: There may be configuration issues in the SAP system that prevent the unit of measure from being recognized.
  
  Solution:
  
  
  Check Material Master: 
  
  Go to the material master record (transaction code MM03) for the item in question and verify that the unit of measure is correctly defined in the relevant views (e.g., Basic Data, Purchasing).
  Ensure that the base unit of measure is set and that any alternative units of measure are also defined if applicable.
  
  
  
  Review Billing Document:
  
  Check the supplier billing document (transaction code MIRO or the relevant transaction) to see if the unit of measure is populated for the item. If it is missing, you may need to re-enter the document or correct the item details.
  
  
  
  Update or Correct Data:
  
  If the unit of measure is missing, you can update the material master to include the necessary unit of measure.
  If the billing document is incorrect, you may need to reverse or adjust the document and re-enter it with the correct information.
  
  
  
  Consult Configuration:
  
  If the issue persists, consult with your SAP configuration team to ensure that the settings related to units of measure are correctly configured in the system.
  
  
  
  Check for User Exits or BAdIs:
  
  If there are any custom developments (user exits or BAdIs) that might affect the processing of units of measure, review them to ensure they are functioning as intended.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  MM03 (Display Material Master)
  MIRO (Enter Incoming Invoice)
  ME23N (Display Purchase Order)
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to this error message.
  
  
  Documentation: Review SAP documentation on material management and billing processes for further insights into unit of measure handling.
  
  
  By following these steps, you should be able to identify the cause of the MN486 error and implement the necessary corrections to resolve it.