GVP Integration guide (p. 147) containst following instruction
"You can also append the gvp-tenant-id parameter to the end of the APP_URI parameter in the Play application to specify a particular tenant. For more information about this parameter, see the Genesys Voice Platform 8.1 User’s Guide."
gvp-tenant-id is little misleading here so You have to go GVP User guide (p 26) to discover that actually gvp-tenant-id is IVR profile name

:
"gvp-tenant-id parameter in the SIP Request-URI—The Resource Manager uses this parameter, if it is present, to identify the voice or call control application for a new session.
...
If the X-Genesys-gsw-ivr-profile-id header is also present, it is used to determining the IVR Profile and the Request URI parameter denotes the tenant."
So if msml-support = false in SIPS configuration it is enough to add ";gvp-tenant-id=IVRProfileName" to APP_URI. In case msml-support = true we need different trick. We enable user-data to SIP mapping on VoIP service pointing to RM (userdata-map-trans-prefix and userdata-map-filter options) and inside strategy before we invoke PlayApplication we attach kv-pari gsw-ivr-profile-id with value equal to IVR profile name. This will cause SIPS to add header X-Genesys-gsw-ivr-profile-id in outgoing INVITE to RM and assosiate You app with correct non default profile.
Pawel