Documentation Index
Fetch the complete documentation index at: https://docs.suprsend.com/llms.txt
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SuprSend uses standard HTTP response codes to indicate the success or failure of your API requests. This page covers common error codes and how to handle them.
Success Codes
| Code | Description |
|---|
200 | OK - Request succeeded |
201 | Created - Resource was successfully created |
204 | No Content - Request succeeded but no content returned |
Error Codes
| Code | Description |
|---|
400 | Bad Request - Invalid request syntax or parameters |
401 | Unauthorized - Authentication required or failed |
404 | Not Found - Resource not found |
5xx | Internal Server Error - Unexpected server error |
All error responses follow a consistent format:
{
"code": 400,
"error_code": "validation_error",
"type": "ValidationError",
"message": "Invalid request parameters",
"detail": "The 'name' field is required"
}
| Field | Type | Description |
|---|
code | integer | HTTP status code |
error_code | string | Machine-readable error identifier |
type | string | Error type classification |
message | string | Human-readable error message |
detail | string | Additional error details (optional) |
Common Error Codes and their solutions
401 Unauthorized - authentication_failed
Causes:
- Missing or invalid service token
- Expired service token
- Using environment API key instead of service token
Correct Syntax to authorize Management API:
# Ensure you're using a valid service token
curl -H "Authorization: ServiceToken YOUR_SERVICE_TOKEN" \
https://management-api.suprsend.com/v1/workflows
400 Bad Request - validation_error
Common Causes:
- Missing required fields
- Invalid field formats
- Invalid enum values
Example:
{
"code": 400,
"error_code": "validation_error",
"type": "ValidationError",
"message": "Invalid request parameters",
"detail": "The 'name' field is required and cannot be empty"
}
404 Not Found
Common Causes:
- Given entity in the request is not found
Example:
{
"code": 404,
"error_code": "not_found",
"type": "NotFound",
"message": "Workflow not found",
"detail": "Workflow with slug 'welcome-sequence' does not exist"
}