The profile parameter is only taken into account in SAP HANA system with rev. 110 or higher. You could still already maintain this parameter in the profile but for now it will be ignored. This parameter is needed to create the SLD association SAP_IdenticalDatabaseSystem between the current primary system and the virtual database system that is reported by the SAP application server. For SAP HANA systems with lower releases you have to create this relation in LMDB manually after the SLD registration. This is described later in this wiki post.