HTTP status codes

Code	Message	Solution
400	Bad Request	Your request invalid. Make sure your request is properly formatted and this is a valid request.
401	Authorization Required	The credentials you provide to access your node endpoint are incorrect. See docs.
404	Not Found	Contact support to check if you are accessing the correct node and if the node is healthy.
404	DEPTH_ZERO_SELF_SIGNED_CERT	Contact support to check if the gateway is healthy.
413	Request Entity Too Large	The default limit of the request body size is 1 MB.
429	Too Many Requests	You hit the default node HTTP connections limit.
499	No response from node	Increase the client-side time-out. Contact support if the issue persists.
500	Internal Server Error	Contact support to check if you are accessing the correct node and if the gateway is healthy.
500	ECONNREFUSED
502	Bad Gateway	Contact support to check if your node is experiencing resource constraints or if the node is healthy.
503	Service Temporarily Unavailable	Contact support to check if your node is experiencing resource constraints.
504	Gateway Time-out	Contact support to check if your node is experiencing resource constraints. Also, consider getting a dedicated gateway.

WebSocket status codes

Code	Message	Solution
1006	Socket Error: read ECONNRESET	Implement a reconnect in your code or get a dedicated gateway.

Code	Message	Solution
-32700	Parse error	Your JSON cannot be parsed on the server side. Make sure your JSON is properly formatted.
-32600	Invalid request	Your JSON-RPC request is not properly formed. See Node API reference.
-32601	Method not found	The method you are trying to call is not available on the node. See also API namespaces.
-32602	Invalid params	Your request has invalid parameters. See Node API reference.
-32603	Internal error	A JSON-RPC error that means your request cannot be processed and usually has a -32000 error with details on why the request cannot be processed.
-32000	Server error	The implementation-defined error on the server. This is basically the node implementation telling you why it cannot process the request. For example, see EIP-1474.