Answer: Reconnect TikTok in Postifys, confirm the creator appears in
/api/connections, pass tiktokAccountId when you have multiple accounts, then retry. Do not paste platform tokens into n8n - use the Postifys API key only.Steps
- Open Postifys and reconnect TikTok for the workspace.
- Run the list connections workflow or dashboard connections view.
- Publish again with a public MP4
videoUrl. - Use Direct Post for automatic publishing, or Draft Upload when creator completion in TikTok is intentional.
TikTok docs · Inbox vs Direct Post
What this means in a real publishing workflow
This error means the selected TikTok creator does not have a usable access token in Postifys. The connection may have expired, been revoked, or belong to another Postifys user.
Recommended implementation
- Open Postifys connections and confirm the intended TikTok creator is listed.
- Reconnect TikTok under the same Postifys account used by n8n.
- Refresh the n8n account selector.
- Retry only after the creator ID is returned by the connection endpoint.
How to verify the fix
Changing the caption or media will not fix authentication. The workflow credential and connected TikTok account must belong to the same Postifys user.
Operational check: Test with one item, confirm the final destination and Postifys history state, and only then enable the recurring workflow. Keep the returned Postifys ID beside the source row so every result remains traceable.
Related Postifys resources
API documentation · Error reference · n8n automation guide · Safe retry guide · Compatibility matrix