A few years ago, I worked at a cookie shop here in the UK.
The shop was a franchise with three branches.
About 6 months after I started working at one of the London branches, I was sent to another branch in London which had recently closed because the manager had resigned/been dismissed (Even today I'm not certain what happened).
It was a small kiosk in a shopping center with a very small customer footfall, with no more than about 10 customers an hour. I'd been operating this small branch by myself for about a week.
At the end of each day, I'd cash up the till and deposit the money into the safe. I'd then enter the details into an Excel spreadsheet on a Google drive which the franchise owner also had access to.
I had a visit from the manager of another branch to see how I was getting on a couple of weeks later. She checked through the sales records on the laptop, along with other documentation.
When she was finished, she said she was 'concerned' about the till balance at the end of every shift.
I couldn't understand why. I explained that the till was always accurate at the end of each shift with no discrepancies or missing cash, and the cash which was sent to the bank was also accurate.
"That's the problem. The till balance must NEVER be perfect! You'll always have a few customers who leave their change behind or give you too much money and walk off..."
I honestly didn't know she was being serious. We had so few customers each day that the till couldn't be over or under at the end of each shift. Plus, we had a charity box on the counter where customers would put their unwanted pennies.
She didn't agree and said it seemed 'suspicious' that the till was never over or under at the end of each shift.
Before she left, she just said to me quietly
"Even if the till balance is correct, say it isn't".
I didn't want to seem suspicious, so every night I entered the till balance on the spreadsheet and made sure the till was slightly over or under by a few pence, even though in reality the till balance was perfect.
Once I started doing this, I never heard anything more about it!