Accrue at Receipt check box when you enter a purchase order line to make it eligible for receipt accrual processing. After you enter a receiving transaction for an accrue-on-receipt purchase order line, you create subledger accounting for the receiving transaction in final mode.
The system should be setup with Accrual Method on Receipt (not on period end).
On PO shipments of Goods line type you may enable the check box - Accrue on Receipt. This is mandatory for Inventory destination and a default for Expense destination.
When goods arrived from the supplier you enter a receipt transaction. That receipt transaction will get accounted and sent to SLA and GL.
The process PRC: Interface Supplier Cost have several parameters. You can select to interface PO Receipts transactions into Projects Costing. You would select to interface invoices as well. The system will check if the receipt transaction has been interfaced to PJC. If so, only AP variances will be imported from AP to PJC. If the receipt transaction has not been interfaced to Projects, then the entire AP invoice will be imported.
Another option is to always interface receipt transactions to Projects, and from AP to always interface only the variances, regardless if the receipt transaction has been already imported or not.