How To Fix ME790 - Material number & differs from that of ordered material &

SAP Error Message - Details

• Message type: E = Error

• Message class: ME - Purchasing: General Messages

• Message number: 790

• Message text: Material number & differs from that of ordered material &

What causes this issue?

The acknowledgment/confirmation for purchase order no. &V3& with item
&V4& cannot be adopted because the customer material number &V1& from
the IDOC differs from the material number &V2& from the PO.

How to fix this error?

Either change the customer material number in the IDOC or get the
supplier to send a new acknowledgment/confirmation with the correct
material number.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ME790 - Material number & differs from that of ordered material & ?

  The SAP error message ME790 indicates that there is a discrepancy between the material number in the purchase order (PO) and the material number in the goods receipt or invoice verification process. This error typically arises during the processing of a purchase order when the system detects that the material number being processed does not match the material number that was originally ordered.
  Cause:
  
  Incorrect Material Number: The material number entered during the goods receipt or invoice verification does not match the material number in the purchase order.
  Copying Errors: If the PO was copied from another document, there may have been an error in the copying process.
  Changes in Material Master: If the material master data was changed after the PO was created, it could lead to discrepancies.
  Different Units of Measure: If the material is defined with different units of measure, it may cause confusion in the system.
  Manual Entry Errors: Manual entry of the material number during the goods receipt or invoice verification can lead to mismatches.
  
  Solution:
  
  Verify Material Numbers: Check the material number in the purchase order and compare it with the material number being processed. Ensure they match.
  Correct the Entry: If the material number is incorrect, correct it in the goods receipt or invoice verification process to match the PO.
  Check Purchase Order: Review the purchase order for any discrepancies or errors. If necessary, create a new PO with the correct material number.
  Review Material Master Data: Ensure that the material master data is accurate and has not been changed inappropriately after the PO was created.
  Consult with Procurement: If there are ongoing issues, consult with the procurement team to ensure that the correct materials are being ordered and received.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like ME23N (Display Purchase Order) to view the details of the purchase order and ME21N (Create Purchase Order) to create or modify POs.
  Material Master: Use transaction code MM03 to display material master data and verify the details.
  Error Logs: Check the error logs or messages in SAP for additional context or related issues that may help in troubleshooting.
  User Training: Ensure that users involved in the procurement and inventory processes are trained to avoid manual entry errors and understand the importance of matching material numbers.
  
  By following these steps, you should be able to resolve the ME790 error and ensure that the material numbers are consistent throughout the procurement process.