How To Fix M8509 - Invoicing party changed from & to &

M8509 - Overview

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 509

• Message text: Invoicing party changed from & to &

What causes this issue?

You changed the allocation criteria. As a result of this change, &V2&
has been determined as the new invoicing party.
The previous invoicing party, &V1&, was automatically changed.

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?

If you manually entered the invoicing party on the header screen, you
have to confirm that the system should overwrite the invoicing party.

Error message extract from SAP system. Copyright SAP SE.

M8509 - Details

• The SAP error message M8509, which states "Invoicing party changed from & to &," typically occurs in the context of invoice processing in SAP. This error indicates that there has been a change in the invoicing party (the entity responsible for billing) during the processing of a transaction, which can lead to inconsistencies or issues in the invoicing process.
  
  Cause:
  
  Change in Master Data: The invoicing party may have been changed in the master data (e.g., customer master data) after the initial transaction was created.
  Document Flow Changes: Changes in related documents (like sales orders or delivery documents) that affect the invoicing party can trigger this error.
  
  Configuration Issues: Incorrect configuration in the system regarding how invoicing parties are determined can lead to this error.
  User Actions: Manual changes made by users during the invoice creation or processing can also lead to this error.
  
  
  Solution:
  
  Check Master Data: Verify the customer master data to ensure that the