Considerations for Accruing Expense Items
Set the Accrue Expense Items option on the Manage Common Options for Payables and Procurement page to indicate when to accrue for expense items.
At Receipt
Accrue when receipts are created. You can override this setting on the PO schedule for expense destination types.
Note:
Inventory items are always accrued at receipt.
Period End
Accrue at the end of a period. During period close, expense accruals are created for all receipts that don't have invoices. Accrual entries are reversed when the next period is opened.