Refund or Reverse Payment

'type' => 'required|string',
'grandTotal'=> 'required|numeric',
'products' => 'required|array',
'products.*.id' => 'required|numeric',
'products.*.amount' => 'required|numeric',
'isReversal' => 'required|Boolean'

If you want to Reverse the payment then set 'isReversal' = true 

{
    "type": "regular",
    "grandTotal": 42,
    "products": [
        {
            "id": 12,
            "amount": 42
        }
    ],
    "isReversal": false
}

{
  "status_code": 202,
  "status_message": "OK",
  "message": "terminalOrderRefundRequestSuccessfully",
  "is_data": false,
  "data": null
}

{
  "status_code": 200,
  "status_message": "OK",
  "message": "terminalOrderReversalSuccessfully",
  "is_data": false,
  "data": null
}

{
  "status_code": 417,
  "status_message": "Client Error",
  "message": "payloadValidationErrors",
  "is_error": true,
  "errors": "Array"
}

{
  "status_code": 404,
  "status_message": "Not Found",
  "message": "orderNotFound",
  "is_error": false,
  "errors": null
}

{
  "status_code": 400,
  "status_message": "Conflict of Business Logic",
  "message": "requestProductIdNotAvailable",
  "is_data": false,
  "data": null
}

{
  "status_code": 400,
  "status_message": "Conflict of Business Logic",
  "message": "orderProductsNotFound",
  "is_error": false,
  "errors": null
}

{
  "status_code": 400,
  "status_message": "Conflict of Business Logic",
  "message": "refundRejectionForProductAmountExceed",
  "is_error": true,
  "errors": "Array"
}

{
  "status_code": 510,
  "status_message": "Execution Exception Occurred",
  "message": "somethingWentWrong",
  "is_error": true,
  "errors": "Array"
}

{
    "status_code": 202,
    "status_message": "OK",
    "message": "terminalOrderRefundRequestSuccessfully",
    "is_data": false,
    "data": null
}