MT518 Network Validated Rules

• C1 If an Exchange Rate (field :92B::EXCH) is present, the corresponding Resulting Amount (field :19A::RESU) must be present in the same subsequence. If the Exchange Rate is not present, the Resulting Amount is not allowed.

  Subsequence C3 if field :92B::EXCH is ...	Subsequence C3 then field :19A::RESU is ...
  Present	Mandatory
  Not present	Not allowed

• C2 If the Settlement Amount (:19A::SETT) is present in sequence B, it must not be present in any occurrence of subsequence C3.

  Sequence B if field :19A::SETT is ...	Then, for each occurrence of subsequence C3 field :19A::SETT is ...
  Present	Not allowed
  Not present	Optional

• C3 If the message is a cancellation, that is, Function of the Message (field 23G) is CANC, then subsequence A1 (Linkages) must be present at least once in the message, and in one and only one occurrence of A1, field :20C::PREV must be present; consequently, in all other occurrences of A1, field :20C::PREV is not allowed.

  Sequence A if field :23G: is ...	Then subsequence A1 is ...	And field :20C::PREV is ...
  CANC	Mandatory (minimum one occurrence of A1 must be present)	Mandatory in one occurrence of subsequence A1, and not allowed in all other occurrences of subsequence A1
  NEWM	Optional	Not applicable

• C4 The following party fields for subsequences C1 and C2 cannot appear more than once in sequence C. The party fields for sequence D cannot appear more than once in a message.

  Subsequence C1	Subsequence C2	Sequence D
  :95a::BUYR	:95a::ACCW	:95a::EXCH
  :95a::DEAG	:95a::BENM	:95a::MEOR
  :95a::DECU	:95a::PAYE	:95a::MERE
  :95a::DEI1	:95a::DEBT	:95a::TRRE
  :95a::DEI2	:95a::INTM	:95a::VEND
  :95a::PSET		:95a::TRAG
  :95a::REAG
  :95a::RECU
  :95a::REI1
  :95a::REI2
  :95a::SELL

• C5 If a qualifier from the list Deliverers is present in a subsequence C1, in a field :95a::4!c, then all the remaining qualifiers following this qualifier in the list Deliverers (see below) must be present.

  In other words, in sequence C, the following scenarios must be validated:

  • If :95a::DEI2 is present in subsequence C1, then :95a::DEI1 must be present in another subsequence C1.

  • If :95a::DEI1 is present in subsequence C1, then :95a::DECU must be present in another subsequence C1.

  • If :95a::DECU is present in subsequence C1, then :95a::SELL must be present in another subsequence C1.

  • If :95a::SELL is present in subsequence C1, then :95a::DEAG must be present in another subsequence C1.

  If a qualifier from the list Receivers is present in a subsequence C1, in a field :95a::4!c, then all the remaining qualifiers following this qualifier in the list Receivers (see below) must be present.

  In other words, in sequence C, the following scenarios must be validated:

  • If :95a::REI2 is present in subsequence C1, then :95a::REI1 must be present in another subsequence C1.

  • If :95a::REI1 is present in subsequence C1, then :95a::RECU must be present in another subsequence C1.

  • If :95a::RECU is present in subsequence C1, then :95a::BUYR must be present in another subsequence C1.

  • If :95a::BUYR is present in subsequence C1, then :95a::REAG must be present in another subsequence C1.

  Deliverers		Receivers
  DEI2	Deliverer's Intermediary 2	REI2	Receiver's Intermediary 2
  DEI1	Deliverer's Intermediary 1	REI1	Receiver's Intermediary 1
  DECU	Deliverer's Custodian	RECU	Receiver's Custodian
  SELL	Seller (Deliverer)	BUYR	Buyer (Receiver)
  DEAG	Delivering Agent	REAG	Receiving Agent

• C6 In subsequence C1, if field :95a::PSET is present, then field :97a:: is not allowed in the same subsequence..

  Subsequence C1 if field :95a::PSET is ...	Subsequence C1 then field :97a:: is ...
  Present	Not allowed within the same occurrence
  Not present	Optional

• C7 If field :22F::DBNM//VEND is present in sequence C, then a vendor must be specified; that is one occurrence of sequence D must contain field :95a::VEND.

  If sequence C is ...	And in sequence C if field :22F::DBNM//VEND is ... (*)	Then sequence D is ...	And in one occurrence of sequence D field :95a::VEND is ...
  Present	Present	Mandatory, that is, must be present minimum once	Mandatory
  	Not present	Optional	Optional
  Not present	Not applicable	Optional	Optional

  (*) if the Data Source Scheme is present in field :22F::DBNM//VEND then the conditional rule does not apply.

• C8 In sequence D, if field :95a::EXCH Stock Exchange or :95a::TRRE Trade Regulator is present, then field :97a:: is not allowed in the same sequence.

  Sequence D if field :95a::EXCH or TRRE is ...	Sequence D then field :97a:: is ...
  Present	Not allowed within the same occurrence
  Not present	Optional

• C9 In sequence B, field :94a::TRAD must not be present more than twice. When repeated, one and only one occurrence must be with format option L (:94L::TRAD).

  In sequence B, field :94a::SAFE must not be present more than twice. When repeated, one and only one occurrence must be with format option L (:94L::SAFE).

  In each occurrence of subsequence B1, field :95a::ALTE must not be present more than twice. When repeated, one and only one occurrence must be with format option L (:95L::ALTE).

  In each occurrence of subsequence C1, field :95a::ALTE must not be present more than twice. When repeated, one and only one occurrence must be with format option L (:95L::ALTE).

  In each occurrence of subsequence C2, field :95a::ALTE must not be present more than twice. When repeated, one and only one occurrence must be with format option L (:95L::ALTE).

  In each occurrence of sequence D, field :95a::ALTE must not be present more than twice. When repeated, one and only one occurrence must be with format option L (:95L::ALTE).

• C10 In each occurrence of sequence D, if field :95a::ALTE is present with format option L, then field :95a::MEOR and field :95a::MERE must not be present in the same occurrence of the sequence.