Here we would like to draw your attention to 0MEC 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).0MEC is a transaction code used for Settings for B2B Sched. Agreements in SAP.
It comes under the package MECR.
Transaction 0MEC technical data table
|Purpose||Settings for B2B Sched. Agreements|