Error Codes

KOLO™ API uses conventional HTTP response codes to indicate the success or failure of an API request.

In general: Codes in the 2xx range indicate success. Codes in the 4xx range indicate an error that failed given the information provided (e.g., a required parameter is missing, etc). Codes in the 5xx range indicate an error with KOLO™’s servers (these should be rare)

• 400: Bad request
• 401: Authorization information is missing or invalid
• 403: x-api-key or Authorization in header is missing or invalid
• 404: Resource or parameter specified cannot be found
• 429: Rate exceeded
• 500: Internal server error