Response schema changed for POST /activity/custom/ (CreateCustomActivity)

What changed

Response schema changed for POST /activity/custom/ (CreateCustomActivity) Affected surface: POST /activity/custom/. Root cause: schema `CreateCustomActivity`. Detected at Mon, 08 Jun 2026 15:43:47 UTC UTC.

Diff

{
  "path": "POST /activity/custom/",
  "removed_fields": [
    "custom_fields"
  ],
  "schema_path": "schema CreateCustomActivity"
}

Likely impact

The contract still holds, but observable behavior shifted — defaults, response timing, or rate-limit shaping. Existing code keeps compiling and most calls keep working, but edge cases may differ. Worth a sanity check.

Recommended action

Diff your serializers against the new schema. The diff above shows what moved.