Double-Selling
When an item listed on multiple platforms sells on two platforms simultaneously before you can delist it. A major crosslisting pain point. Tools like Shopfront sync inventory automatically to prevent this.
Where you'll see this
This term is commonly used on:
ebaydepopgrailedfacebook-marketplace
Put this into practice
Shopfront handles the hard parts of crosslisting and inventory sync so you can focus on finding and selling.