9.1  General  p. 645

9.2  ASN.1 violation or encoding error  p. 645

9.3  Unknown or unforeseen message type  p. 646

9.3a  Unsolicited received message  p. 646

9.3b  Unexpected critical message extension  p. 646

9.4  Unknown or unforeseen information element value, mandatory information element  p. 647

9.5  Conditional information element error  p. 647

9.6  Unknown or unforeseen information element value, conditional information element  p. 648

9.7  Unknown or unforeseen information element value, optional information element  p. 649

9.8  Unexpected non-critical message extension  p. 649

9.9  Handling of errors in nested information elements  p. 649