Connecting SumUp POS
SumUp is fully supported in Stash, including SumUp Orders. Connection takes 2 minutes via OAuth.
Who can do this
Only Admins can connect SumUp. You'll sign in to SumUp as the account owner during the flow.
Before you start
You need at least one Stash shop set up. See How to add your first location.
You need your SumUp account owner login.
Allow popups for app.getstash.io in your browser.
How to connect SumUp
From the sidebar, open Integrations.
Find the Stash shop you want to connect SumUp to.
Click Connect POS.
Choose SumUp from the provider list.
Sign in to SumUp with your owner account.
Authorize Stash to access your products, locations, and sales.
You'll be redirected back to Stash. The connection appears in seconds.
After connecting — finish the setup
Same flow as any POS connection:
Locations imported automatically
Map locations to your Stash shops. See Mapping POS locations to Stash shops.
Sync products to pull in your SumUp catalog
Link Blueprints to each SumUp product that's a recipe, bundle, or kit. See Linking a Blueprint to a POS product.
Good to know
SumUp Orders
SumUp's Orders functionality (the more advanced order-management add-on) is also supported in Stash. Orders flow through with the same automation as regular SumUp transactions.
Multi-location SumUp
If your SumUp account covers multiple physical sites, all locations import. Map each one to the right Stash shop.
Refunds
SumUp refunds reflect in Stash — refunded items return to inventory automatically.
Troubleshooting
"My SumUp account doesn't show all my locations"
Ensure you signed in with the SumUp owner account, not a sub-user. Sub-users may not have visibility on all locations.
"Sales aren't appearing in Stash"
Check the Setup card on the Integrations page. The most common issue is that locations aren't mapped — sales come in but Stash doesn't know which Stash shop to post them to.
"I sell through SumUp Orders, will it work?"
Yes. Stash receives both regular SumUp transactions and SumUp Orders. They're treated identically for inventory purposes.
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