Here we would like to draw your attention to OMR3 transaction code in SAP. As we know it is being used in the SAP MM-IV (Invoice Verification in MM) component which is coming under MM module (Material Management).OMR3 is a transaction code used for C MM-IV Default Account Maintenance in SAP.
It comes under the package MR0C.
Transaction OMR3 technical data table
|Purpose||C MM-IV Default Account Maintenance|