Error Codes

Code	Text message	Description	HTTP Status
0	Success	The request has been processed successfully	200
5010	Internal Server Error	Unidentified server error	500
5020	Unexpected db error	Unidentified error occurred during processing resource	500
5040	General provider error	The error is on the provider side	500
4010	Invalid signature	The signature has been made incorrectly	400
4030	Access to the requested resource is not allowed	Lack of permission to access the requested resource	200
4040	Page not found	The requested page cannot be found	404
1021	request validation error	Invalid request body	400
1407	Cache: item not found	The requested resource not found	200
1041	Order not found	Payment with the specified identifier not found	200
1042	Duplicate external_id	Repeated payment with the same identifier	200
999999	Unknown error	Unidentified error	500