Hello Andreas,
Last week, I managed to uncheck the checkboxes and deactivate the order button every time the page loaded, but that didn’t solve the problem.
Yes, you understood correctly. The problem was not caused by double-clicking, but because the old preselection of the table remained after the payment process, because the selection of the items to be paid for took place via a bound context for the payment page, and the selection then remained after the payment process. Thanks for your detailed answer. I have now finally solved this problem using the “removeSelections” method of the “sap.m.ListBase” class.
Greetings Leonid