These are the most common questions regarding the "Manually Sync Inventory" button in Product Bundles. Select the question to view the answer.
The "Manually Sync Inventory" button sets the Bundle variants as "in stock" when the base variant has stock added to it. It also sets the stock at 0 if the regular variant it was created from has 0 inventory.
The way the Bundle variant's inventory works is that as long as the base variant has inventory, then the Quantity Break variants will have infinite inventory, simply marked as N/A and will deduct inventory from the base variant when purchases are made.
When the base variant runs out of inventory, the Bundle variants will show as 0. When the base variant gets more stock, this button will have to be selected to set the variants inventory back to infinite. It will also set the app's variants to 0 if the regular version of the variant is already out of stock.
This button should be selected after you change a regular variant's stock level from 0 to a positive number or if it's already at 0 and isn't displaying as sold out. Because app variants need to be created as having an inventory of "N/A" due to a Shopify API limitation, it's a good practice to select this button whenever creating or editing a Bundle group, so the app's variants will have the appropriate inventory level.
From within the Product Bundles app, select Product Bundles. You will see the Manually Sync Inventory Button on this screen.