Custom Transaction Line Field > Stock Description of an Item is not Available as an Option Under Source From

1. Navigate to Customization > Lists, Records, & Fields > Transaction Line Fields > New.
2. Navigate to Sourcing & Filtering tab.
3. In the Source List select Item.
4. In the Source From - Stock Description field is not available from the list.
 
When user creates a Custom Transaction Line Field to source the Stock Description of an item, Stock Description from an Item record will only be available to Source From if Web Store feature is enabled. To enable the Web Store feature, perform the following steps:
 
1. As Administrator navigate to Setup > Company > Enable Features.
2. Under Web Presence tab, check the box for Web Site.
3. Click Save.