I use a mail service the requires 1 or 2 lines more than a normal address. It's a huge pain filling out shipping address forms online to include the extra info. A lot of it ends up in the Name field. Truncation is also a problem when the label printers truncate more than the form validation.

All of my future projects will have 5 line shipping address forms.

Slightly off topic, but reminded me of an issue I had with Amazon for months. I work for a small agency, the name of which begins with "Box" and then a number. No matter where I put it in the delivery address, Amazon (or the delivery service) would change the business name to "PO Box ..."

I ended up working around it by removing all spaces from the business name in my shipping address.

Ha, must have been a pain for companies that require a real, physical address for whatever. I have most certainly interacted with APIs that had that requirement, and their regexes for refusing PO Boxes were generous, to put it lightly.