Add the correct entity links between the BSM instance and the core Communication Manager to which the entity link subtends.
ADDITIONAL INFORMATION:
The ports and transports used should mirror those used on the entity links between the core Communication Manager and the primary Session Manager.
If Step 1 does not clear the warning, verify that all users on the branch use a Communication Manager application mapping to the subtended Communication Manager.
If the problem does not resolve, contact Avaya Technical Support.