The granular lock functionality is available for SAP systems that support the concept of granular locks via the SUSR_BAPI_USER_LOCK and SUSR_BAPI_USER_UNLOCK functions. These locks relate to the account locking mechanisms that are available from the Central System of an SAP Central User Administration (CUA) environment.
This functionality is only available through the SAP User Management driver if the BAPI functions are configured to be a Remote-Enabled Module and the driver is configured to support locking.