---
title: "Changes to Get audience sizing"
method: POST
path: "/ad_accounts/{ad_account_id}/ad_groups/audience_sizing"
---

# Changes to Get audience sizing

`POST /ad_accounts/{ad_account_id}/ad_groups/audience_sizing`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 5 of 29 revisions.

- **2026-06-04** (v5) `b698c180678a`: 5 breaking, 1 warning, 8 info
- **2025-12-11** (v5) `79f62f71f05b`: 1 breaking
- **2025-12-10** (v5) `6768e3ca1ffa`: 2 info
- **2025-04-04** (v5) `10f9eba4ad97`: 3 info
- **2024-04-23** (v5) `f9321315766f`: 1 info

## Changes

- **2026-06-04** (v5) `b698c180678a`: 5 breaking, 1 warning, 8 info
  - added `#/components/schemas/AdgroupPlacementGroupType` to the `placement_group` request property `allOf` list
  - the request property `keywords/items/match_type` became not nullable
  - removed the enum value `undefined` of the request property `keywords/items/match_type`
  - the `placement_group` request property type changed from `string` to no type
  - the `targeting_spec/TARGETING_STRATEGY/items/` request property type changed from no type to `string`
  - removed `#/components/schemas/PlacementGroupType` from the `placement_group` request property `allOf` list
  - added the new optional request property `targeting_spec/GEO_EXCLUDE`
  - added the new optional request property `targeting_spec/LOCATION_EXCLUDE`
  - added the non-success response with the status `401`
  - added the non-success response with the status `404`
  - added the non-success response with the status `429`
  - the response optional property `audience_size_lower_bound` became read-only for the status `200`
  - the response optional property `audience_size_upper_bound` became read-only for the status `200`
  - added the success response with the status `201`
- **2025-12-11** (v5) `79f62f71f05b`: 1 breaking
  - request body became required
- **2025-12-10** (v5) `6768e3ca1ffa`: 2 info
  - added the new optional request property `targeting_spec/MAXIMUM_AGE`
  - added the new optional request property `targeting_spec/MINIMUM_AGE`
- **2025-04-04** (v5) `10f9eba4ad97`: 3 info
  - the endpoint scheme security `client_credentials` was added to the API
  - added the new `19+` enum value to the request property `targeting_spec/AGE_BUCKET/items/`
  - added the new `20+` enum value to the request property `targeting_spec/AGE_BUCKET/items/`
- **2024-04-23** (v5) `f9321315766f`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/pinterest/apis/pinterest-rest-api/docs/ad_accounts/:ad_account_id/ad_groups/audience_sizing/post.md) - [API](https://skmtc.dev/pinterest/apis/pinterest-rest-api.md) - [Page](https://skmtc.dev/pinterest/apis/pinterest-rest-api/changes/ad_accounts/:ad_account_id/ad_groups/audience_sizing/post)