Mandatory
This field specifies the type of the agreement covering the transaction. It is followed by the date on which the agreement was signed and the version of the agreement.
Type of Agreement must contain one of the following codes (Error code(s): T47):
Date must be a valid date expressed as YYYYMMDD (Error code(s): T50).
Version must be a valid year expressed as YYYY. It must not consist entirely of zeroes (Error code(s): T50).
In a BBA agreement, Date and Version are not allowed.
In a DERV, AFB or ISDA agreement, the absence of the second and third subfield means either that the information is not available or that the agreement is under negotiation.