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Following is a description of each activity in the subprocess, listed by the activity's display name.

Start (Node 1)

This Standard function activity marks the start of the process.

XML Get Tag Value (Node 2)

This Standard external Java function activity retrieves the value of a particular XML tag set in the event message. At this node, the process retrieves the name of the order requestor from the purchase order event message.

Buyer: Send PO to Supplier (Node 3)

This event activity sends the purchase order event message to the supplier, using the outbound agent on the Buyer system and the inbound agent on the Supplier system identified by the Get Agent Details activity in the Buyer: Top Level PO process.

PO Sent to Supplier (Node 4)

This activity notifies the order requestor that the purchase order has been sent to the supplier. The message includes a 'Send' attribute that displays the purchase order number when the notification is sent.

If you display the property page of this activity node, you see that the activity is assigned to a performer whose name is stored in the item type attribute named Order Requestor.

End (Node 5)

This Standard function activity marks the end of the process.

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