WooCommerce Square integration that keeps the register and the online shop in step

Square keeps its own catalogue for the register and WooCommerce keeps its own for the site, and neither has any idea what the other has sold. Left alone they separate quickly, and the moment you notice is usually the wrong one: someone buys online the last of something that just went through the till.

QuickSync holds one count between them and corrects each side from the other, so neither platform has to be the master. A counter sale lowers the website; a web order lowers what the register will let you sell. Both sides announce their changes to us immediately, so neither is waiting on a scheduled check.

Items pair up by SKU and Square is the tighter of the two at 80 characters against WooCommerce’s 300. That is roomy enough that most catalogues never hit it, but it is worth a glance at your longest SKUs before you connect, because anything over the limit gets truncated on the way to Square and then stops matching.

Square has no field for us to write a tracking number into, so when you ship an order that originated at the register, the tracking stays in QuickSync and on the WooCommerce order rather than appearing anywhere in Square. Most counter sales walk out of the shop and never need one, which is why this rarely bites.

It matters if you take orders at the counter for posting later, or if someone on your team works out of Square and expects to read tracking off the sale. WooCommerce orders take a tracking number normally, so the gap is only on the Square side.