The mask could be present, .e.g not zero, but the selection of the AMF could fail. This would lead to a skipping the selection of the AMF by PLMN ID, which is the last option when no UE identity is present and/or matching.
The mask could be present, .e.g not zero, but the selection of the AMF could fail. This would lead to a skipping the selection of the AMF by PLMN ID, which is the last option when no UE identity is present and/or matching.