1 Scope

29.5243GPP5G SystemCause codes mapping between 5GC interfacesRelease 17Stage 3TS

The present document specifies the mapping:

– performed by the AMF between HTTP responses (Status Codes and Protocol or Application Errors) returned by 5GC NFs to the AMF and 5GMM Cause values sent to UEs;

– performed by the SMF between HTTP responses (Status Codes and Protocol or Application Errors) returned by 5GC NFs to SMF and 5GSM Cause values sent to UEs;

– performed by the SMF between N4 errors returned by the UPF and 5GSM Cause values sent to UEs.