Add a department in Fakturownia, then choose it in the app. Its details go on your documents: seller details, bank account, country (for OSS) and the “zw” exemption reason.
Log in to your Fakturownia account
Go to Settings
Choose Company / Department
Click “Add new department” (screenshot below)
Fill in the department details: company name, tax ID (NIP), address and country. KSeF needs all of them.
If you sell tax-exempt (zw) items, set the default “zw” reason too.
Save the department
Then in the app in Shopify, click Refresh list now, choose the department and Save. See Content » Department.
