Here we would like to draw your attention to OACK_FRONTEND transaction code in SAP. As we know it is being used in the SAP BC-SRV (Basis Services / Communication Interfaces in Basis) component which is coming under BC module (BASIS).OACK_FRONTEND is a transaction code used for Customizing Check Front End in SAP.
It comes under the package SAOP.When we execute this transaction code, OACUSTOMCHECK_FRONTEND is the normal standard SAP program that is being executed in background.
Transaction OACK_FRONTEND technical data table
|Purpose||Customizing Check Front End|