To setup the preferred payment method in your shop using your PostFinance API credentials,

- Open your shop in ShopFactory

- Click Central dropdown -> Payment Method Accepted

- From the Payment Providers list, tick "PostFinance API" checbox

- Scroll down the page and click NEXT

- Enter your PostFinance API merchant account credentials including the supported shop currencies.

- Then tick the card types under PostFinance API supported Payment Methods that you want to accept in your shop

- Scroll down and click Next

- Click Finish to save the changes.

- Save and preview your shop. Place a test order.

- Republish your shop so that the changes are uploaded online.