Here we would like to draw your attention to M/42 transaction code in SAP. As we know it is being used in the SAP MM-PUR (Purchasing in MM) component which is coming under MM module (Material Management).M/42 is a transaction code used for Maintain Message Schema: Del. Sched. in SAP.
It comes under the package ME0C.
Transaction M/42 technical data table
|Purpose||Maintain Message Schema: Del. Sched.|