Deprecated - Retrieve statistics of specific campaign instances.

The api to get statistics of specific campaign instances v1.0 (v1.0/admin/instances/stats) is deprecated. The end of life is 31-Dec-2025. Use the following alternative API: GET /v2.0/instances/stats
API request is only valid for resources created using V1 version. Attempting to access V2-exclusive resources with the V1 API will result in a 400 error. Additionally, V2 resources are excluded from V1 API filter search results.
Get aggregated statistics about campaign instances depending on the specified filter. If called by an application owner, the API returns statistics of the instances that the owner created or that contain at least one application that the owner owns.
Entitlements required: manageAccessCertification [Manage Access Certification].