"Route Conformance Warning"
TAAATS compares the datalink/ads position sent from the linked aircraft with its known flight data. If there is a discrepency, TAAATS provides a warning to the controller. Unusual to be associated with STAR since STARs usually associated with airport with radar coverage, and radar info over-rides the datalink.
Tailored Arrivals is an extension to the CPDLC command set that allows ATC to send a STAR route (with vertical nav limits) directly to aircraft. The pilot then accepts, and the arrival route and level requirements are load into FMS. Has been trialled, and is progressing. Stage 2 didn't involve ATC - it was done remotely.