The index of the Route Map to use as an advertise map. This is only applicable to conditional advertisement. In order for the policy configuration to be valid, both advertise_map and non_exist_map must be specified. Both of these maps must be of type AMB_BGP_PERMIT and at least specify an exact NLRI prefix match, although they may specify additional match fields. Routes matching the advertise map will only be advertised to neighbors or peer groups assigned this policy configuration if there are no routes in the LocRIB which match the non-exist map.