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API Errors and Troubleshooting
Troubleshooting the standard JSON-RPC errors.

Example Error Response

{
"jsonrpc":"2.0",
"id":1,
"error":{
"code":-32602, // this is the reference error code
"message":"invalid argument 0: json: cannot unmarshal hex string of odd length into Go value of type common.Address"
}
}
A typical error message returned in JSON contains the following key fields.
  1. 1.
    CODE : The JSON-RPC error code, see below for extended description.
  2. 2.
    MESSAGE : An explanation of what went wrong, and how you can correct it.

JSON-RPC Error Codes

Code
Return Message
Description
-32700
Parse error
Invalid JSON was received by the server. An error occurred on the server while parsing the JSON text.
-32600
Invalid Request
The JSON sent is not a valid Request object.
-32601
Method not found
The method does not exist / is not available.
-32602
Invalid params
Invalid method parameter(s).
-32603
Internal error
Internal JSON-RPC error.
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Example Error Response
JSON-RPC Error Codes