Here we would like to draw your attention to SM12 transaction code in SAP. As we know it is being used in the SAP BC-CST (Client/Server Technology in Basis) component which is coming under BC module (BASIS).SM12 is a transaction code used for Display and Delete Locks in SAP.
It comes under the package SENQ.When we execute this transaction code, RSENQRR2 is the normal standard SAP program that is being executed in background.
SAP SM12 menu path
See the possible menu paths to access the same report by avoiding entering the transaction code.
Tools → Administration → Monitor → Lock Entries
Transaction SM12 technical data table
|Purpose||Display and Delete Locks|