Orchimate 1.5.0 /

FIX4.1

Each administrative or application message, is preceded by a standard header. The header identifies the message type, length, destination, sequence number, origination point and time.

Two fields helps with resending messages. The PossDupFlag is set to Y when resending a message as the result of a session level event (i.e. the retransmission of a message reusing a sequence number). The PossResend is set to Y when reissuing a message with a new sequence number (e.g. resending an order). The receiving application should process these messages as follows:

• PossDupFlag—if a message with this sequence number has been previously received, ignore message, if not, process normally.
• PossResend—forward message to application and determine if previously received (i.e. verify order id and parameters).

Each message, administrative or application, is terminated by a standard trailer. The trailer is used to segregate messages and contains the three digit character representation of the Checksum value.