Our client has lots of cash sales and wants to use the option of Payments in Order Entry.
The issue is that the payment information is not saved unless you enter something on the Check Number field.
Additionally, the system checks for duplicated cheque numbers.

In this case, the CC terminal is at the end of the counter and the receipts are stored close to the machine, not the computer. So, the sales person will need to either write down the number in a piece of paper or do a trip to his/her computer and go back to file the receipt.

Does any body have any experience/suggestion assigning "manually" a unique number as a check number for cash sales and even for Credit Card/ Debit payment?

Thank you in advance for any advice.