Universal Trace Analyzer
Error codes › MAP error

MAP error 21 facilityNotSupported

MAP error3GPP TS 29.002 §17.6.6

What it means

The requested supplementary service/facility isn't supported by the responding node (facilityNotSupported).

Where you see it

In a returnError component of a MAP dialogue over TCAP/SCCP (roaming, SMS, call routing).

What to check

Check which network element sent the returnError (calling GT) and the operation it answered.

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Related codes

MAP error 20 ss-IncompatibilityThis supplementary service is incompatible with another one already ac…MAP error 22 ongoingGroupCallA group call is already ongoing and conflicts with this request (ongoi…MAP error 19 ss-SubscriptionViolationThe subscriber's subscription doesn't allow this supplementary service…MAP error 25 noHandoverNumberAvailableNo handover number was available to complete the handover (noHandoverN…MAP error 16 illegalSS-OperationThe requested supplementary-service operation isn't valid in this cont…MAP error 26 subsequentHandoverFailureA handover that was already in progress failed partway through (subseq…