Connections

• Accounts payable. Send approved order and posted receipt evidence for invoice matching; receive match exceptions and completion evidence for purchasing review.
• Inventory. Connect stocked item and accepted quantity updates to the inventory system that owns stock balances.
• Warehouse. Use warehouse receipt evidence where a receiving location is managed there, while keeping the purchase order reference intact.
• Supplier. Exchange invitations, order revisions and acknowledgements with the relevant supplier channel.
• Budgeting. Share approved commitment and allocation evidence with the budget process that owns its limits.

The delivery outbox retains the event, destination, status, attempts and acknowledgement reference for each configured route. A procurement event links the source action to the purchasing record. A sent message and an acknowledged message are different states; Buyer and Controller review failed deliveries before treating the destination as current. Decide connection ownership and reconciliation timing during implementation.