I work as a sys admin for small org and received this error message on a few machines  I had a ticket with Technical support team for the same issue. The case was sent to their development team  Last week, I was informed that error code WPE01-XXXX is for analytical purpose only. A future SupportAssist build will take care of it. I was not given any ETA for the release though.  As of now ignoring the message is the only option,     
PCIE false positive. Has Dell ever patched this problem?
5490 AIO Support Assist error WPE01-EC4 PCIE