Community Tip - Help us improve the PTC Community by taking this short Community Survey ! I am using Windchill PDMLink Release 12.0 and Datecode with CPS 12.0.0.1

I'm using the Silicon Expert Sync extension and when I click on the action "Synchronize SuMa Part" a pop-up is opening and in Message column we are getting "Error: Property ' http://javax.xml.XMLConstants/property/accessExternalDTD ' is not recognized.
Not found: the previous value will be kept. Please check your xpath expression for this specific data mapping via Diagnostics of this Windchill extension" after synch. Need to understand the message error.

Here are the errors that I faced
Error: Property ' http://javax.xml.XMLConstants/property/accessExternalDTD ' is not recognized.
Not found: the previous value will be kept. Please check your xpath expression for this specific data mapping via Diagnostics of this Windchill extension

Google says that this might be related to a compilation issue:

https://access.redhat.com/solutions/1124603

What Java version is running on your machine?