# Request Status Codes
For all requests, we will return an HTTP status code that indicates a success or the problem that has led to the failure.
A successful request will be returned with status code
# API Error Codes
Invalid authentication credentials
You are not allowed to use this endpoint, please upgrade your plan (opens new window).
A requested endpoint does not exist
Validation error, please check the list of validation errors: here
You have hit your rate limit or your monthly limit. For more requests please upgrade your plan (opens new window).
Internal Server Error - let us know: firstname.lastname@example.org
# Validation errors
# Missing vat_number
vat_number parameter is required
# Missing country_code
country_code parameter is required, if the given
vat_number has no country code.