How to force the use of client in the ticket?

[nic1982]

how to force the use of client in the ticket?

I need it to be mandatory to put a client, that does not accept a ticket without a client.

is there any way?

[Georg]

Hello, dear user

You should add the customer to the receipt each time manually. But you can leave the receipt without adding a customer. Unfortunately, it is not possible to force add a customer to the receipt.