So a few months ago, after a buggy change to a stock update sent to the channel manager (external system for updating pricing and availability of hotel rooms) we lost 21.000 EUR in just 2 hours of the bug being deployed. We exported low season rates (today’s rates) for the higher seasons.

Luckily a human saw the error, when he saw a big flow of reservation coming in at anomalous peace.

From there on, I’m too scared to make changes to the 20-line function that produces the updates to be sent.

We had not a chance to cancel the reservations made through the channels (websites were you book the reservations).