In SNOW/PD v4 integration, how can I provision an assignment group to an existing PD Service and escalation pollicy? According to the integration guide when you provision a SNOW assignment group it creates a new PD service and escalation policy.
"Provisioning Assignment Groups to PagerDuty
ServiceNow has the concept of assignment groups . With the PagerDuty integration, each assignment group will have a corresponding PagerDuty service and escalation policy. This integration offers an easy way to quickly generate a new PagerDuty service and escalation policy . It will also populate the associated fields within ServiceNow."