- Codes in the 2xx range indicate success
- Codes in 4xx and 5xx range indicate an error
- 4xx errors indicate a bad request and are fixable using the information in the error message.
- 5xx errors indicate an issue with Lead’s servers, (this is rare).
Foundations
Errors
Understand how Lead handles errors and error messages.
Lead uses HTTP response codes to indicate the success or failure of an API request.

