What is the cause of the 'Gew. host RC 5' message?

The cause of this is that this payment terminal keeps swapping the active configuration with another terminal that has the same cash register number and control number. In practice, it has been shown at least once that another terminal with the same configuration remained active at Alvira's helpdesk. This results in the payment terminal losing its configuration after a few payments and displaying this message. The solution is to find out where the other terminal is located and remove the configuration from there. Especially consider the problems that the customer likely has had before, which required creating a copy test setup.