We have a problem where an external system (ServiceNow) is sending a REST API request to our production org. This week, the requests started failing with a return code of 400 (Bad Request). However, when I take the request that is being formed on the SNow side and send it through to the same endpoint using Workbench, the request succeeds. Which tells me that something is happening to the request between when it is logged in SNow and when it is actually sent.
Is there a way to see the incoming API request on the Salesforce side, so I can see exactly what request is coming in? Debug logs do not seem to do it, as the request does not show up anywhere that I can see. Any help is appreciated - we need to see why SF sees the request as bad.
I appreciate that response! So, it seems that Event Monitoring must be purchased to see the actual API calls being used?
