We need ServiceNow to call an external API on a fixed interval and read a tag that holds only 1 (alarm active) or 0 (no alarm). An Incident should be created only on the 0 → 1 transition — not on every poll while the value stays at 1.
Did we do all that in ServiceNow without needing a middleware for specific conditional check. If yes then what will be the complete workflow and how to design or implement this?
if the external application supports REST API and holds the audit/transition where it says tag old value as 0 and tag new value as 1, then ServiceNow can capture that as payload and make a decision accordingly like data.oldValue != data.newValue to create incident.
Thankyou, vishal for reply. the application support REST API but does not hold the audit/transition record. Is any thing other than that, we can do with the solution.
