How To Fix W0004 - Either 'Assign MG to VO-mat.'or 'Exceptions possible"

SAP Error Message - Details

• Message type: E = Error

• Message class: W0 - Customizing - ISR

• Message number: 004

• Message text: Either 'Assign MG to VO-mat.'or 'Exceptions possible"

What causes this issue?

You set the indicator for the following fields:
"MG assignment to value-only material"
"Existence of exceptions possible"
Only one of the two indicators can be set.

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?

Deselect one of the indicators.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message W0004 - Either 'Assign MG to VO-mat.'or 'Exceptions possible" ?

  The SAP error message W0004: "Either 'Assign MG to VO-mat.' or 'Exceptions possible'" typically occurs in the context of Material Ledger (ML) and Invoice Verification (IV) processes, especially when dealing with invoice verification with material ledger activated.
  
  Cause of the Error
  This warning message appears when the system expects either:
  
  The Material Ledger (ML) movement type (MG) to be assigned to the Invoice Verification (VO) movement type for the material, OR
  The system to allow exceptions during invoice verification.
  
  In other words, the system is checking the configuration related to the movement types and the handling of invoice verification with material ledger activated. If neither condition is met, the system issues this warning.
  More specifically:
  
  "Assign MG to VO-mat." means that the movement type for material ledger (MG) should be assigned to the invoice verification movement type (VO) for the material.
  "Exceptions possible" means that the system should be configured to allow exceptions during invoice verification.
  
  If neither is configured, the system cannot process the invoice verification correctly with material ledger active.
  
  Where does this happen?
  
  During Invoice Verification (MIRO) when posting invoices against purchase orders or goods receipts.
  When Material Ledger is active and configured for the relevant plant/material.
  In the configuration of movement types and their assignment to material ledger movement types.
  
  
  How to Solve the Issue
  
  
  Check Movement Type Assignment:
  
  Go to transaction OMJJ (or SPRO path: Materials Management ? Inventory Management and Physical Inventory ? Movement Types).
  Verify that the movement type for invoice verification (VO) is correctly assigned to the material ledger movement type (MG) for the material.
  If not assigned, assign the correct MG movement type to the VO movement type.
  
  
  
  Allow Exceptions in Invoice Verification:
  
  If you want to allow exceptions during invoice verification, configure the system accordingly.
  This is done in the Material Ledger settings or Invoice Verification settings.
  Check the configuration in SPRO under:
  
  Materials Management ? Logistics Invoice Verification ? Incoming Invoice ? Set Up Invoice Verification ? Define Tolerances for Invoice Verification.
  
  
  Ensure that the tolerance limits and exception handling are set properly.
  
  
  
  Check Material Ledger Activation:
  
  Ensure that Material Ledger is properly activated for the plant and material.
  Use transaction CKMSTART to check ML activation.
  If ML is not active or partially active, this can cause inconsistencies.
  
  
  
  Review Material Master Data:
  
  Check the material master (MM03) for the relevant material.
  Verify if the material is flagged for material ledger and if the valuation type is consistent.
  
  
  
  
  Additional Notes
  
  This message is a warning (W0004), not an error, so it may not stop the posting but indicates a configuration issue that could lead to incorrect postings or valuation errors.
  Proper configuration of movement types and material ledger integration is critical for correct inventory valuation and invoice verification.
  Consult your SAP MM and FI/CO consultant if unsure about the movement type assignments or material ledger settings.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Movement type for invoice verification (VO) not assigned to material ledger movement type (MG), or exceptions not allowed.
  
  
  Solution
  Assign MG to VO movement type in OMJJ; or configure exceptions in invoice verification tolerances.
  
  
  Related Transactions
  OMJJ (Movement Types), CKMSTART (Material Ledger activation), MIRO (Invoice Verification)
  
  
  Related Configuration
  SPRO ? Materials Management ? Inventory Management ? Movement Types; Invoice Verification tolerances.
  
  
  
  
  If you provide more context (e.g., transaction where the message appears, system version), I can help with more precise steps.