PO approval workflow status is Deferred
Product name: Oracle 12.2.11
Application : Purchasing
Responsibility : Purchasing Super User
When a Purchasing Manager approved a PO for a buyer who doesn't have enough approval limit, the PO Action History showed that the Purchasing Manager has approved the PO, but the PO status still showed "In Process".
I checked the Administrator Workflow and found out the last PO Approval activity is in "Deferred" status. The last Activity is "Set Forward-To/From For Approval Action", and the Parent Activity is "Notify Approver". Both Purchasing Manager and Buyer have valid email address in Employee setting.
I has fixed this issue by running the "Workflow Background Process" with Item Type "PO Approval".