Update 5/23/23 4:30PM:
Workday has posted an alert, the punchout integration issue is impacting multiple clients:
Please note that we are currently experiencing issues with Supplier Punchout integrations completing successfully for Production tenants in WD1. This will result in a user never being redirected to the Supplier’s Procurement page when a Punchout session is initiated.
We are actively working to find a resolution as soon as possible. We apologize for any disruption this may cause and will provide you with an update by 2:00 PM PST.
The Workday Punchouts (Connect to Supplier Website) from the Requisition is experiencing an outage. We have raised a case with Workday to review our Production site and assist with determining the cause. We will post an update once we have more information.