With Packrooster Shipping you can connect Posti's shipping methods to your Shopify store and use the app to process Posti's orders directly in Shopify.
If you want to use direct integration with Posti, you'll need Posti SmartShip API Credentials for it. SmartShip is a service developed by nShift to Posti and usage of SmartShip costs 20€ /mo.
In order to get SmartShip API Credentials you must first have a customer contract with Posti. You can ask for the activation of SmartShip Credentials from Posti's business customer service and check the credentials from Posti SmartShip Portal.
In Packrooster Shipping carrier settings, there's three fields to fill.
Contract number: Your Posti contract number
API-key: SmartShip API Customer number
API-secret key: SmartShip API password
After the API Credentials are set, you can activate Posti shipping methods and pick-up points in Packrooster and process Posti orders directly in Shopify.
Packrooster Shipping is a Shopify App created by Approosters. The application is used to connect shipping carriers to your Shopify store, to setup shipping methods and pick-up points and to fulfill orders. Don't hesitate to contact us at firstname.lastname@example.org