Customers

One customer record. The quote, the invoice, the statement and the reporting all use it. There is no second copy in another system.

Why that matters more than it sounds

Most shops run a sales system and an accounting package. The customer exists in both. The two drift apart within weeks.

The address gets fixed in one. A name gets corrected in the other. Then somebody quotes a customer who is ninety days overdue, because the sales side has no idea.

Here the person you invoice is the person you look up. What they owe, what they paid, what you sent them — one history, not two half ones.

The record

Contact details, terms, and a credit position. The invoice screen reads that credit position for you. You do not have to remember it.

Statements go to the customer they belong to. They email straight from the software. Nobody saves a file and attaches it by hand.

Groups

You can group customers for statements, pricing and reporting.

That helps when several buyers belong to one parent company. It helps when you want to see how a region is doing. And it helps when part of your customer list is on different terms from the rest.