A user is experiencing inventory synchronization issues with the Marketplace Connect app when linking their Shopify store to eBay. After migrating all eBay listings through the app, they continue receiving orders for out-of-stock items, with delays of up to a day before warnings appear in Shopify.
Key Problems:
Inventory sync failures causing orders for unavailable products
Delayed out-of-stock notifications (“1 item may have gone out of stock”)
Declining eBay seller status due to forced order cancellations
Current Configuration:
“Auto-Sync Price and Inventory” is enabled in Settings > eBay
Products lack SKU numbers, which may be contributing to the issue
Resolution Status:
The discussion remains open. Codisto (Marketplace Connect support) has requested the user contact marketplace-connect@shopify.com directly with sample products and screenshots for further investigation. The user is seeking clarification on manual sync options and typical support response times.
Summarized with AI on October 29.
AI used: claude-sonnet-4-5-20250929.
Hello, i’m using the marketplace connect app to sync items between shopify to my previously existing ebay account. I removed all listings from my eBay account and imported them back using marketplace connect on shopify.
However, marketplace connect doesn’t seem to be syncing inventory as I keep receiving orders for items that aren’t in stock on shopify. When this happens, I get an orange warning saying ‘1 item may have gone out of stock’ but, for example, when this happened this morning - the item had been out of stock for a day.
This has happened several times now and has resulted in my seller status on eBay tanking as I have to cancel the orders. Is there any way to fix this?
Hi, where can I find Inventory Sync? When I go to Apps > Marketplace Connect > Settings > eBay the only option for sync that I can see is ‘Auto-Sync Price and Inventory’?
Hi! Thank you for answering. Where can I find the Sync Settings? When I go to Apps> Marketplace Connect>eBay there are only two sync options for ‘Auto-Sync Price and Inventory’ and these are both toggled on.
None of my items have SKU numbers, is this the issue?
This is Joy V from Shopify Marketplace Connect support. To investigate this issue further, we kindly ask that you contact us directly at marketplace-connect@shopify.com. Please include a sample product or listing for reference, and feel free to attach any relevant screenshots that may help us better investigate the issue.