iProcurement Destination type shows just 2 values Expense & Maintenance, no Inventory

Hi,

We are on R12.1.3

The iProcurement module is implemented here. We have Inventory items as well as expense items defined. When we create a Purchase requisition for an Inventory item from Oracle Purchasing, the destination type defaults to Inventory. However when we try to create a purchase requisition for the same inventory item from iProcurement, the type always defaults to 'Expense'. We have also seen that the Destination type field has just 2 values viz. Expense and Maintenance. We are wondering why 'Inventory' does not show up in that list. There is no customization. Could you please provide some pointers as to what needs