Section: D.8.7.2 Conditional IE errors
Content: When upon receipt of a UPDS message the UE diagnoses a "missing conditional IE" error or an "unexpected conditional IE" error, or when it receives a UPDS message containing at least one syntactically incorrect conditional IE, the UE shall ignore the message. When the network receives a message and diagnoses a "missing conditional IE" error or an "unexpected conditional IE" error or when it receives a message containing at least one syntactically incorrect conditional IE, the network shall either: a) try to treat the message (the exact further actions are implementation dependent); or b) ignore the message.