We connect to Magento via API. The connection is secure and gives only a right to read. The integration is limited to creating a role with limited rights and a dedicated web service. There is no risk of edge effects. It is necessary that you trace back your parcel numbers well in Magento.
Integration start here: https://app.shipup.co/apps/new/magento
Don't forget to click "Done" on the top right corner to get to the next step
Step 1 : Create a limited and read-only role for Shipup
Once the role is created, go back to Shipup and click 'Done' on the top right corner
Step 2 : Create a web service user for Shipup and Magento
Once the web service is created, go back to Shipup and click "Done" on the top right corner
Note: Integration may not work if the orders table has been modified