Scheduled cannot be set for active posts

The Synup API returns SY75003 in the errors array when this happens.

What the response looks like

{
  "data": null,
  "errors": [
    {
      "message": "Scheduled cannot be set for active posts",
      "context": {},
      "code": "SY75003"
    }
  ]
}

Where it comes from

Documented under Promotional Posts. The context field carries the offending value when one is relevant, and is empty otherwise.

See the full error code reference for every code the API can return.

Other Promotional Posts errors