When the maximum message size of the MT 760 is insufficient, one or more MTs 761 can be used to extend the available size. Up to seven MTs 761 may be sent in addition to the MT 760.
Information conveyed in a designated field in this message (for example, 32B Undertaking Amount) must not be repeated in the terms and conditions specified in field 77U or in the requested local undertaking terms and conditions specified in field 77L.
Information in field 77U and field 77L must not be in conflict with information that is conveyed in a designated field elsewhere in this message.
Information conveyed in a designated field in this message (for example, 32B Undertaking Amount) must not be repeated in any related MT 761. The information in any related MT 761 must not conflict with any information that is present in this MT 760.
Sequence C may only be present if the message is used for issuance of a counter-undertaking, that is, field 22A (Purpose of Message) in sequence A contains the code ISCO (or ICCO) and the details in sequence B are for the (counter) counter-undertaking.
Field 45L must only be present in sequence B if the message is used for issuance of an undertaking, that is, field 22A (Purpose of Message) in sequence A contains the code ISSU.
Any applicable rules must be indicated in field 40C. If no rules are applicable, this must also be indicated (code "NONE"). If the guarantee is subject to rules other than URDG (Uniform Rules for Demand Guarantees, International Chamber of Commerce, Paris, France) or ISP (International Standby Practices, International Chamber of Commerce, Paris, France) it must be indicated in field 40C using the code OTHR.
The definition of this message type does not specify any characteristics or underlying agreements of the actual guarantee. Therefore, all specific terms, conditions and details of the guarantee are to be specified in field 77C.
Since a SWIFT message is restricted to the maximum input message length, more than one MT 760 may be required to accommodate all the details of the guarantee.