Feature request: expose Solo Printer receipt printing to third-party POS integrations

[kilbot]

We build POS software used by merchants who purchase SumUp Solo + Printer expecting the bundled printer to work with their POS receipts.

At the moment, the SDK/API lets third-party POS apps integrate SumUp payments, but there appears to be no supported way to print a receipt to the attached Solo Printer from the POS app. The same limitation was discussed on the iOS SDK in sumup/sumup-ios-sdk#138, where SumUp confirmed Solo Printer printing is not currently supported directly by the SDK.

This creates a frustrating experience for both merchants and POS developers:

• merchants buy Solo + Printer expecting a complete payment + receipt setup
• POS developers can take payment but cannot print to the printer the customer already bought
• customers may need to buy a second third-party receipt printer just for POS receipts
• support teams have to explain that “Solo + Printer” does not mean “usable printer for integrated POS apps”

Could SumUp consider exposing one of the following supported options?

1. SDK method to print a receipt to the attached Solo Printer
2. Cloud API endpoint to send receipt content to a paired Solo + Printer
3. Ability to pass structured receipt lines during checkout
4. A capability flag indicating whether Solo Printer printing is available
5. At minimum, a supported way to trigger printing of SumUp’s own card receipt after SDK/Cloud API payment completion

Ideally, POS apps should be able to print their own itemised receipts, for example with a structured payload rather than raw printer commands:

SumUpAPI.printReceipt(
    transactionCode = "...",
    receipt = SumUpReceipt(
        merchantName = "...",
        lines = listOf(...),
        totals = ...,
        footer = "Thank you"
    )
)

A Cloud API equivalent would also work well for web/POS integrations:

{
  "total_amount": { "value": 1500, "currency": "EUR", "minor_unit": 2 },
  "receipt": {
    "print": true,
    "lines": [],
    "footer": "Thank you"
  }
}

This would make Solo + Printer much more useful for integrated POS deployments and would reduce customer confusion when merchants expect their purchased SumUp printer to work with their POS software.

[iTomkinas]

Yes, we need this as well.

[JamesPoth]

I was surprised when I could not do this. It seems like an obvious addition to the API. Please do add this in.

[ndhbr]

That feature would be very useful. We even went out and bought a SumUp with a printer just to find out that the Cloud API doesn't support it at all. :(