ClickUp Common Errors Overview Reference for ClickUp API v2 errors. All errors return JSON with (message) and optionally (error code). Error Response Format HTTP Status Errors 400 Bad Request | Situation | Response | Fix | |-----------|----------|-----| | Missing required field | | Include in request body | | Invalid field value | | Priority must be 1-4 or null | | Malformed JSON | | Validate JSON before sending | | Invalid custom field value | | Match value to field type | 401 Unauthorized — OAuth Errors | ECODE | Cause | Solution | |-------|-------|----------| | OAUTH 017 | Token malformed…