How To Fix M8594 - Save again before you change invoice document & already released

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 594

• Message text: Save again before you change invoice document & already released

What causes this issue?

The invoice document was already released for batch invoice
verification. If the invoice verification type is now set to 'no
invoice verification', you can only make further changes if the invoice
has not yet been checked automatically.

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?

To prevent the invoice being checked in the background, you must save
the document after the type is changed. This prevents the invoice being
checked in batch mode.
If you do not save the invoice document, and the system starts
processing in the background, the system blocks the invoice document,
and you can no longer process it online.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8594 - Save again before you change invoice document & already released ?

  The SAP error message M8594 ("Save again before you change invoice document & already released") typically occurs in the context of invoice processing within the Materials Management (MM) module. This error indicates that you are trying to make changes to an invoice document that has already been released and saved in the system. 
  Cause:
  
  Document Status: The invoice document has already been processed and released, meaning it is in a status that does not allow further changes without specific actions.
  System Lock: The document may be locked for editing due to its status or because it is being processed by another user or transaction.
  Incomplete Processing: There may be a requirement to complete certain steps or validations before making changes to the invoice.
  
  Solution:
  
  Re-save the Document: If you need to make changes, you may need to first save the document again. This can sometimes refresh the document status and allow for further changes.
  Check Document Status: Review the status of the invoice document. If it is in a released state, you may need to reverse or cancel the invoice before making changes.
  Use the Correct Transaction: Ensure you are using the appropriate transaction code for the changes you want to make. For example, if you need to change a released invoice, you might need to use a specific transaction for invoice correction.
  Consult with Your SAP Administrator: If you are unsure about the steps to take or if the document is locked, consult with your SAP administrator or support team. They can provide insights into the document's status and any necessary actions.
  Check for User Authorizations: Ensure that you have the necessary authorizations to make changes to the invoice document.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MIRO (Invoice Verification) or MR8M (Cancel Invoice Document) that may be used to manage invoice documents.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation or user manuals related to invoice processing in the MM module for best practices and guidelines.
  
  If the issue persists after trying the above solutions, it may be beneficial to escalate the matter to your SAP support team for further investigation.