How To Fix M8457 - Material ledger mixed invoices not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 457

• Message text: Material ledger mixed invoices not possible

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8457 - Material ledger mixed invoices not possible ?

  The SAP error message M8457, which states "Material ledger mixed invoices not possible," typically occurs in the context of the Material Ledger (ML) when there are issues related to the processing of mixed invoices for materials. This error can arise due to several reasons, and understanding the cause is essential for finding a solution.
  Causes of Error M8457
  
  
  Mixed Invoice Configuration: The system may not be configured to allow mixed invoices for the material in question. This can happen if the material is set up in a way that does not support mixed invoice processing.
  
  
  Material Ledger Settings: The Material Ledger settings for the company code or plant may not be correctly configured to handle mixed invoices. This includes settings related to the valuation method or the type of material.
  
  
  Invoice Type: The type of invoice being processed may not be compatible with the mixed invoice functionality. For example, if the invoice is for a service or a non-stock item, it may not be allowed.
  
  
  Currency Issues: If there are discrepancies in currency settings between the invoice and the material ledger, this can lead to errors.
  
  
  Document Type Restrictions: Certain document types may have restrictions that prevent mixed invoices from being processed.
  
  
  Solutions to Error M8457
  
  
  Check Material Master Settings: Review the material master data for the affected material. Ensure that the settings allow for mixed invoices. This includes checking the valuation class and the material type.
  
  
  Review Material Ledger Configuration: Go to the configuration settings for the Material Ledger in the SAP system. Ensure that the settings for mixed invoices are enabled for the relevant company code and plant.
  
  
  Invoice Type Verification: Ensure that the invoice type being used is appropriate for mixed invoices. If necessary, change the invoice type to one that supports mixed invoices.
  
  
  Currency Consistency: Verify that the currency used in the invoice matches the currency settings in the Material Ledger. If there are discrepancies, correct them.
  
  
  Consult Documentation: Refer to SAP documentation or help files for specific configuration settings related to mixed invoices and the Material Ledger.
  
  
  SAP Notes and Support: Check for any relevant SAP Notes that may address this specific error. Sometimes, there are known issues or patches that can resolve the problem.
  
  
  Testing in a Sandbox Environment: If possible, replicate the issue in a test or sandbox environment to identify the exact cause without affecting production data.
  
  
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  Related Information
  
  Material Ledger: The Material Ledger is a sub-ledger in SAP that allows for the tracking of material movements and valuations in multiple currencies and at different valuation levels.
  Mixed Invoices: Mixed invoices refer to invoices that contain both stock and non-stock items, or items with different valuation methods.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MIGO (Goods Movement), MIRO (Invoice Verification), and others that may be involved in the process.
  
  By following these steps and understanding the underlying causes, you should be able to resolve the M8457 error effectively.