1: Start by opening the Flatpay portal with the customer's login here: https://portal.flatpay.dk/terminals
2: Go to “Settings - External access”
3: Copy the GUID
4: Find the menu item “Flatpay companies” in Pos and click “New”
- In the display name, enter “Pos1 - Flatpay”
- In “Company GUID”, paste the GUID from the Flatpay portal.
- Click “+” to register webhooks (these are activated in step 6).
5: Adjust the configuration on the POS agent:
- Find the menu item “Agents” in Pos.
- Here you find the agent used on the POS (PC name) and double-click it.
- Then click “Edit” and fill in the drop-down fields “Flatpay company” and “Flatpay terminal”
6: Enable Flatpay in AppBuilder and turn off any other integrations
Access AppBuilder as follows:
- Search for “Settings” in “Financial”
- Then proceed as shown in the image below - REMEMBER to select, under “Level”, the agent (PC name) that belongs to the POS.
- Click “Save”

NOTE: make sure other integrations are set to “0” in enabled if they previously had another card integration such as Verifone or Nets.
When setting up more than one POS - repeat steps 3, 4 and 5.
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