The inventory detail sub-record is available when the Advanced Bin / Numbered Inventory Management feature is enabled.
This record stores values related to bin numbers or serial/lot numbers for items, including line items on transactions.
Arrow : The arrow icon indicates that the inventory detail is available for the item and needs to be configured. It appears only in Edit mode for a transaction.
Check mark : The check mark icon indicates that you have already configured the inventory detail for this item.