at the moment one can only get associations for a single record per REST API call.
e.g. to get the users list for a device one can run:
GET https://[SMAX Server]/rest/[tenant id]/ems/Device/[device id]/associations/DeviceUsedByPerson/?layout=Id
however if there many devices in SMAX (usually > 1000) this requires a lot of API calls (--> one per device). instead it would be great to have the option to just query all device and its attributes, incl. associations in just one call.
this should save quite some load on the system.