3114940 - Upgrade Workflows or Missing functionality / fields on Manage Workflow Apps

The workflow you created in the manage workflow app is still running a old version You can also see a message which says a new version exists when you open the workflow:

"This workflow is still based on an older workflow version. Do you want to change it to the new version?"
Then click yes and activate it.

Or

Open a Workflow Scenario App, you can´t find expected fields related to New functionality.

Or

You receive errors like below :

"Parameter IV_CURRENCY_OUT of method CL,CL_MM_PUR_WF_OBJECT_PO,CONVERT_CURRENCY not found"

SAP S/4HANA Cloud

KBA , MM-FIO-PUR-PO-WFL , Purchase Order Workflow , MM-FIO-PUR-REL , Fiori UI for Purchasing Approval , Problem