WhatsApp Error 100: Invalid parameter

What this means#

The request included unsupported or incorrectly spelled parameters.

Why it happens#

• Typo in a parameter name.
• Unsupported parameter for this endpoint.
• Malformed RSA key.

How to resolve it#

Check the endpoint reference for the correct parameter names and formats.

Learn more#

See Meta's official reference for WhatsApp error code 100.

Still stuck?#

If the error persists after trying the steps above, note the exact error code (100) and reach out to support with the message details — the code tells us exactly what WhatsApp rejected.