Warn Admin when a customer makes their first invoice purchase

Many traders do a credit check on their own initiative. But actually, this is only necessary for the first purchase on account. But especially if you have a lot of orders - how do you know straight away that it is the customer's first purchase on account?

Our solution: a new database field that we tick for all existing customers.

For newly registered customers, this field is not ticked. As soon as such a customer orders on account, the admin receives a warning e-mail and the customer is ticked. Now the admin can carry out a creditworthiness check for this customer.