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Cloud invocation

Invoke POS devices over the Unity Gateway from a cloud ePOS or Oracle Opera Cloud.

Cloud invocation lets your back-office or cloud POS call a payment terminal without a local device IP connection. Your system sends the request to PXP over the internet, then Unity routes it to the POS+ device at the merchant site.

We support two ways of invoking a POS device from the cloud:

  • PXP cloud device API: Use the cloud device REST API with PXP-POS HMAC authentication.
  • Oracle Opera Cloud: Integrate through Oracle's OPI Cloud interface (which PXP supports). Configure terminal mode, mTLS, and site mapping in Opera, then use cloud invocation for card-present payments.