HI ​@TanjaK, 
thanks for your question!

To include notes from a restaurant invoice on the final guest bill, you can follow these steps:

1. Open the customer's reservation screen.
2. Click on the Items tab.
3. From the Add product section, choose the product you want to add from the drop-down menu.
4. Enter the product count, and click Add. The system adds the product to the billing tab of the reservation owner's customer profile, under Unpaid items / Deposits.
5. You can select the checkbox next to the item to move it to an open bill.

For more detailed instructions, you can refer to this article: How to add, move, or remove items from open bills in Mews Operations

Let me know if this helps! 

Hi Jess,

and thanks for the reply. It did not answer my question.

Case: Travel Agent have a standing reservation for groups

Group of customers have lunch in the restaurant. Reference number 123. We make a NOTE on their bill and send it to billing.

When they send the invoice of all the groups from that week they would like to separate the different ref.numbers. These ref.number is what is NOT showing on the invoice.

TanjaK

Hello,

I'm not sure if that's possible through any POS integration. I recommend speaking with your POS provider to explore your options.

If it's not possible, the most foolproof method would be to use the Notes, Purchase order number, or Unique Identifier fields directly on the bill in Mews.