Execute the following code:
	  
curl --location 'https://api.sandbox.datatrans.com/v1/transactions/secureFields' \
		--header 'Content-Type: application/json' \
		--header 'Authorization: Basic MTEwMDAxNzc2NDpBSXlUUDQ1R0RZRUg5eTJ4' \
		--data '{
			"amount": 1000,
			"currency": "CHF",
			"returnUrl": "https://pay.sandbox.datatrans.com/upp/merchant/successPage.jsp",
			"mcp": {
				"amount": 155029,
				"currency": "ISK",
				"conversionRate": "155.02914547935012",
				"transactionDate": "2024-06-14T07:12:25Z",
				"retrievalReferenceNumber": "416617796972",
				"provider": "Planet",
				"reasonIndicator": "MI",
				"userId": 999000017
			}
		}'