WooCommerce TikTok Shop integration that keeps one stock count

TikTok Shop and WooCommerce both push their changes to us the moment they happen, so neither side sits behind a timer waiting to be asked. Several marketplaces we support cannot do that and have to be checked every couple of minutes instead. This pair is not one of them, which means a sale on the site and a sale on TikTok Shop each reach the other without a scheduled gap.

That is worth more here than on a quiet pair. When traffic arrives in bursts, the stock you are selling from is being drawn down by two audiences at once, and the difference between an immediate report and a two-minute check is exactly the window in which you oversell something. Removing the timer does not remove the need for headroom, but the numbers you look at are current.

WooCommerce holds a SKU of up to 300 characters, far more room than a catalogue ever needs, and TikTok Shop takes 50. Six times the difference sounds academic until you look at a catalogue whose codes were generated from product titles, because those run long and nothing has ever forced them shorter. Anything over 50 is truncated on the way to TikTok Shop and then matches nothing.

The failure is quiet, which is what makes it worth an hour now. We send the shortened SKU rather than rejecting the item, so no listing errors and nothing turns red. The item stops pairing with itself and its count stops moving, and you notice when TikTok Shop and the website disagree with no event to blame. Filter for codes over 50 characters, shorten those, then connect.