IMS Events or Triggers

Substation ES supports both the receiving and publishing of IMS Asynchronous and Synchronous events or messages. Programs such as MPPs or BMPs can publish events by Substation directly onto ESB.

If you are using IMS version 10 or higher, Substation ES does not require the OTMA exits to be installed in order to deliver outbound events. To enable outbound events, you must update the IMS member DFSTDYxx and define IMS descriptors. Product installation sample member DFSYDT0 in USERHLQ.PROC contains the recommended default Substation ES definitions.

• General Trigger Processing
  Substation ES supports both guaranteed and reliable triggers or events.
• Synchronous Callout (ICAL) or Request/Reply Support
  The Substation ES OTMA interface supports the use of synchronous callouts (ICAL), also known as request/replies.
• Processing of IMS OTMA Trigger Errors
  This section describes how to resolve two error conditions.

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