Server Reference Guide > Server Reference Guide > JSON-RPC 2.0 Interface > JSON-RPC Request Named Parameters
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JSON-RPC Request Named Parameters
The "params" member within a JSON-RPC request must contain named parameters and not positional arguments, because parameters to 4GL procedures are always passed by name and never by position.
A valid request:
{
  "jsonrpc": "2.0",
  "method": "subtract",
  "params": {
    "subtrahend": 23,
    "minuend": 42
  },
  "id": 1
}
An invalid request:
{
  "jsonrpc": "2.0",
  "method": "subtract",
  "params": [
    23,
    42
  ],
  "id": 1
}
Last modified date: 12/20/2023