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Meta WhatsApp Error Code 1 (WABA API Unknown) — Invalid Request or Transient Server Error — Fix

## Overview Error code #1 — "API Unknown". Either the request was malformed or Meta had a transient server-side issue. Often clears on its own; sometimes a parameter needs correcting. ## Why This Happens - A malformed API request (wrong endpoint or parameters), or - A temporary Meta server-side p

Updated Jun 10, 2026

Overview

Error code #1 — "API Unknown". Either the request was malformed or Meta had a transient server-side issue. Often clears on its own; sometimes a parameter needs correcting.

Why This Happens

  • A malformed API request (wrong endpoint or parameters), or
  • A temporary Meta server-side problem.

What to Do

  1. Check the endpoint format and the parameters in the request.
  2. Verify parameters match Meta's API documentation.
  3. Check metastatus.com for any ongoing Meta outage.
  4. If everything looks correct, wait a few minutes and retry — it's likely transient.

Suggested Reply

The error you're seeing is Meta error code 1 — "API Unknown". This usually means either a temporary glitch on Meta's side or a small issue with the request. 🙂

What to do:

  1. Wait a couple of minutes and try again — it's often transient
  2. Check metastatus.com to see if Meta is having an outage

If it keeps happening, let me know and we'll look into the request details together. 😊

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