B2B Gateway adds an interchange control number and a group control number to outbound EDI X12 and EDIFACT messages, including outgoing acknowledgments. The control numbers uniquely identify the message or acknowledgement.
You can use the following types of control numbers:
•Event IDs. B2B Gateway adds the file event ID as both the interchange control number and group control number to outbound messages and acknowledgments.
•Sequence numbers. You define the initial interchange control and group control numbers that start the sequences. B2B Gateway adds the initial interchange control and group control numbers to the first outbound message or acknowledgement, and increments the numbers sequentially for subsequent messages.
You select the type of control numbers to use when you define the outbound flow for a partner.
You can reset a control number sequence at any time by editing the initial control number. After you reset an initial control number, the sequence restarts with the new initial number. The allowed number of digits in a control number is nine digits for EDI X12 messages and 14 digits for EDIFACT messages.
Tip: Reset the interchange control number when the number of digits in the next expected number is about to reach the maximum allowed number of digits in control numbers.
When the sequence restarts, B2B Gateway doesn't retain the correlation between messages and message acknowledgments for messages that were sent before the sequence restart.