location assignment and group assignment

How does pager duty assign location in servicenow incident form and how does it assign the assignment group, in servicenow incident form. also where can i find paylods in pager duty

Location isn’t assigned by default on the PD - SNow flow. You could create an Inbound Field Rule to use metadata from the alert/incident or set a static/dynamic value using other SNow data.

The SNow Incident Assignment Group would align to the PD Escalation Policy associated with the PD Service. Every Assignment Group record would have a PD ID that makes this connection.

All of the PD --> SNow data is captured in the Import Row tables in SNow. The main one for PD --> SNow would be the Webhook Import Row table.