MT 517 Network Validated Rules

C1 

If the Function of the Message (field 23G) is not CANC then field 13A Number Identification, must be present and contain '515' in minimum one occurrence of the subsequence A1 Linkages. (Error code(s): E59).

Sequence A if field :23G: is ...	Then in minimum one occurrence of subsequence A1 field :13A is ...
Not CANC	Mandatory and must contain '515' (note: it does not need to be present in all occurrences of A1)
CANC	Optional

C2 

If the message is a cancellation, ie, Function of the Message (field 23G) is CANC, then a reference to the previous message must be specified in the Linkage section, ie, field :20C::PREV must be present minimum once in one and only one occurrence of A1; consequently, in all other occurrences of A1, field :20C::PREV is not allowed that message (Error code(s): E08).

Sequence A if field :23G: is...	then field :20C::PREV is...
Sequence A if field :23G: is...	Then in minimum one occurrence of subsequence A1 field :20C::PREV is...
CANC	Mandatory in one occurrence of subseq. A1, and not allowed in all other occurrences of subseq. A1
NEWM	N.A.
CANC	Mandatory (note: it does not need to be present in all occurrences of A1)
Not CANC	Optional