Tag Field Name Data Type Description Used in
370 OnBehalfOfSendingTime
(Deprecated in FIX.4.3)

AbbrName: OBSndTm

Not Requred in FIXML
UTCTimestamp (Deprecated in FIX.4.3) Used when a message is sent via a 'hub' or 'service bureau'. If A sends to Q (the hub) who then sends to B via a separate FIX session, then when Q sends to B the value of this field should represent the SendingTime on the message A sent to Q. (always expressed in UTC (Universal Time Coordinated, also known as 'GMT')