Calling createError1 (Body has no required parameters (intent, purchase_units))
Request Body: {}

Response:
Status Code: 401
Error: invalid_client
Error_description: Client Authentication failed


Calling createError2 (Body has invalid parameter value for intent)
Request Body:
{
    "intent": "INVALID",
    "purchase_units": [
        {
            "amount": {
                "currency_code": "USD",
                "value": "100.00"
            }
        }
    ]
}

Response:
Status Code: 401
Error: invalid_client
Error_description: Client Authentication failed