Reject campaign suggestion set

Deprecated. This page documents the v2 buyer API, which is closed to new API clients and switches off on 1 December 2026. Use V3 instead: see Move a v2 buyer REST integration to V3. The conversion endpoint, Log event, stays open.

POST /api/v2/buyer/campaign-suggestion-sets/:campaignSuggestionSetId/reject Declines the entire set. Nothing moves, and no member media buy is changed. Rejection is all-or-nothing for the same reason approval is — the members are sides of one transfer. A rejection is not a permanent veto of the campaign. The optimizer will run again, and a later run produces a fresh set for the same campaign. Rejecting is how you decline this recommendation.

Request

curl -X POST https://api.apostra.com/api/v2/buyer/campaign-suggestion-sets/77/reject \
  -H "Authorization: Bearer $SCOPE3_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"reason": "Holding CTV budget flat through the brand campaign"}'

Parameters

Field	Type	Required	Notes
`campaignSuggestionSetId`	string	Yes	Set id (path parameter) — digits only, no leading zero, up to 18 digits.
`reason`	string	No	Up to 1000 characters. Recorded on the set and on every member suggestion.

The body is optional — POST with no body rejects without a reason.

Response

{
  "campaignSuggestionSetId": "77",
  "status": "REJECTED"
}

Errors

Status	When
`404`	No such set, or it belongs to another account.
`409`	The set is not in `AWAITING_APPROVAL` — already decided, superseded, expired, or parked.
`400`	Malformed set id, or a reason longer than 1000 characters.

A reason is worth sending. It is stored with the decision, so it explains later why a run was declined — to your team, and to anyone reviewing how the campaign has been optimized over time.

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Release Notes

Reject campaign suggestion set

Request

Parameters

Response

Errors

​Request

​Parameters

​Response

​Errors

Request

Parameters

Response

Errors