Deprecated - Retrieve all assignments in a given campaign instance.

The api to get all assignments for a campaign instance v1.0 (v1.0/admin/instances/{id}/assignments) is deprecated. The end of life is 31-Dec-2025. Use the following alternative API: POST /v2.0/instances/{id}/assignments
Get all the assignments for a specific campaign instance. If called by an application owner, the API can get assignments only for campaigns that the owner created or that contain at least one application that the owner owns.
Entitlements required: manageAccessCertification [Manage Access Certification].