Here we would like to draw your attention to SET_EPM_EXTN 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).SET_EPM_EXTN is a transaction code used for Sets the Extension fields for the BP in SAP.
It comes under the package S_EPM_ACI_COMMON.When we execute this transaction code, RS_EPM_ACI_SET_EXT_FIELD is the normal standard SAP program that is being executed in background.
Transaction SET_EPM_EXTN technical data table
|Purpose||Sets the Extension fields for the BP|