Troubleshooting
Diagnose and fix common PDL API errors.
For the complete list of status and error codes, see Errors and status codes.
Fix 401 authentication errors
What a 401 authentication_error means and how to resolve it.
Fix 402 out-of-credit errors
What a 402 payment_required error means and how to restore access.
Fix 429 rate limit errors
What a 429 rate_limit_error means and how to stay within your rate limit.
Why a request returns 404
What a 404 not_found response means and how to improve match rates.
API FAQs
Frequently asked questions for each PDL API.