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Exotel uses standard HTTP status codes to communicate errors:

Status Code

Value

200

OK - Everything went as planned.

202

Accepted - Request accepted.

400

Bad Request - Something in your header or request body was malformed.

401

Unauthorised - Necessary credentials were either missing or invalid.

402

Payment Required - The action is not available on your plan, or you have exceeded usage limits for your current plan.

403

Your credentials are valid, but you don’t have access to the requested resource.

404

Not Found - The object you’re requesting doesn’t exist.

409

Conflict - You might be trying to update the same resource concurrently.

429

Too Many Requests - You are calling our APIs more frequently than we allow.

5xx

Server Errors - Something went wrong on our end. Please try again.