I.3 User authentication failure

24.1093GPPBootstrapping interface (Ub) and network application function interface (Ua)Protocol detailsRelease 17TS

If the response returned by the UE is different than expected, the BSF may challenge the UE again with a new Digest challenge using the same SIP Digest authentication vector. After N consecutive incorrect responses from the UE, the BSF shall indicate a failure to the UE. The exact value of N is defined by local policy.