Portals
If you have multiple portals in your organization, the portal url name should be mentioned in every API request to identify the portal.
/app/<portal>/api/v3/requests
portal - represents the url name of the portal.
The portal name is provided during organization creation. The portal url name for each portal will be present in ESM Directory>Service Desk Instances.
Example - /app/itdesk/api/v3/requests