Here we would like to draw your attention to MR91 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).MR91 is a transaction code used for Messages for Invoice Documents in SAP.
It comes under the package MR.When we execute this transaction code, MM70AMRB is the normal standard SAP program that is being executed in background.
Transaction MR91 technical data table
|Purpose||Messages for Invoice Documents|
Some Basic Questions & Answers
Program named MM70AMRB will run when we enter transaction code MR91.
MR91 is a Report Transaction code type which is shortly represented as R.