Integrate Monext or Payline payment in Shopware

The customer uses the Monext interface in the selected display mode, embedded in the page or in an overlay. A payment session is linked to the context of their purchase.

After the interface returns, the server retrieves the session from Monext. It compares the basket, amount, currency, sales channel and customer identity, among other elements, with the expected data.

A mismatch stops validation. Payment notifications are then reconciled with the transaction; a positive interface response alone is not sufficient.

Configuration covers merchant credentials, currencies, capture mode and payment statuses. The payment method must be enabled and assigned to the relevant channel.

Local configuration checks prove neither the Monext contract nor external notification reachability. A test payment and return checks in the target environment are still required before going live.