If a new Item is fetched Grab it's significant data for logging: Value cannot be null. Parameter name: sourc and If a new Item is fetched Grab it's significant data for logging: Value cannot be null. Parameter name: sourcee

Hi
It’s purely due to arguments and we need to validate whether right arguments are passed between xaml workflows while calling with INVOKE WORKFLOW FILE activity
Kindly run in debug mode so that we can find at which activity we are missing with arguments

Cheers @MONALI_BHALERAO