My company has found the most efficient way to pack our shipments is to have the SKU number printed on the label. This has been working great for the USPS shipments we've been doing. However, we've negotiated rates with UPS and have started using them instead.
UPS offers 2 reference lines at the bottom of the label. You currently only use one of those - for the order number. Can you please allow us to use the second line to put SKU's on just like the USPS allows?
This is such a big deal to my company that we may have to go to shipstation, which I'd rather not do... They have this ability - so I would think you guys could do it as well.