SWIFTNet FIN batching

Several SIPN FIN messages can be transported within a single InterAct message. This batching of SWIFTNet FIN messages reduces messaging overhead. The FIN messages contained within a single InterAct message are typically a mixture of new messages and acknowledgments of previous messages:

• An outbound InterAct message (that is, one that is to be sent to the SIPN) contains both:
  • ISN messages; that is, outbound FIN messages
  • OSN acknowledgments; that is, acknowledgments of inbound FIN OSN messages that were received earlier
• An inbound InterAct message (that is, one that is received from the SIPN) contains both:
  • OSN messages; that is, inbound FIN messages
  • ISN acknowledgments; that is, acknowledgments of outbound FIN ISN messages that were sent earlier (FTM SWIFT routes each acknowledgment back to the appropriate application)

For each FIN LT session, you can specify:

• The maximum number of outbound FIN messages that can be contained in a single InterAct message
• The maximum size of an InterAct message that is used as a vehicle for outbound FIN messages
• The maximum amount of time that an InterAct message that contains at least one outbound FIN message is to wait before being sent

Use these parameters to balance throughput, resource consumption, and response time. The query command provides information that helps clarify how these parameters affect the FIN LT session.