Ask for help. I am now working as an accountant in a restaurant. I am a novice. The department left a bottle for the library and didn't record it. People want to return it. How can I make an account now? Did you invoice them when you gave them red wine? Income cannot be confirmed without invoicing, and cost cannot be transferred without confirming income (income matching principle).

It is even more wrong to do the cost but the inventory has not changed. Because conversion is borrowing: cost lending: inventory. The expenses you made last month need to be reversed in red this month, and the reason is explained in the summary.

Finally, it is unreasonable for the other party to come back to you to make a bill, because they didn't write you an iou when they borrowed red wine from you. So the best you can do is write him a note, clearly stating that the red wine borrowed last month has been returned.

If you have any questions, you can ask them.