40001 Invalid Parameters

One or more parameters in your TikTok Marketing API request are malformed, missing, or contain values that don't match the expected format or enum.

What causes this error?

One or more parameters in your TikTok Marketing API request are malformed, missing, or contain values that don’t match the expected format or enum.

How to fix it

1. Check the docs: Compare each parameter against the official TikTok Marketing API reference for the endpoint you’re hitting.
2. Validate types: Ensure numeric fields are sent as numbers, not strings. Booleans must be true/false, not 1/0.
3. Required fields: Double-check that all mandatory fields are present in your payload.