How To Fix MRNB021 - Invoice posted: &1/&2

MRNB021 - Overview

• Message type: E = Error

• Message class: MRNB - Messages for Revaluation (Retro Active Pricing)

• Message number: 021

• Message text: Invoice posted: &1/&2

What causes this issue?

Invoice posted: &V1&/&V2&

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?

<DS:TRAN.MIR4>Display Invoice / Credit Memo</>

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MRNB021 - Invoice posted: &1/&2 ?

  The SAP error message MRNB021 ("Invoice posted: &1/&2") typically indicates that an invoice has already been posted for a particular purchase order (PO) or goods receipt (GR). This error can occur in various scenarios, such as when trying to post a new invoice for a PO that has already been invoiced or when attempting to reverse an invoice that has already been processed.
  
  Cause:
  
  Duplicate Invoice Posting: The most common cause is that an invoice for the specified PO or GR has already been posted in the system.
  Incorrect Invoice Reference: The invoice being processed may reference a PO or GR that has already been fully invoiced.
  System Configuration: There may be settings in the system that prevent multiple invoices from being posted against the same PO or GR.
  
  
  Solution:
  
  Check Invoice History: Review the invoice history for the specific PO or GR to confirm if an invoice has already been posted. You can do this