Hi @Srkanoje,
StackOverflowError would usually indicate there is a loop in your flow that is not supported by DSS during a recursive build. You can either remove the loop in your flow so that the recursive building works. If the loop is required, then try using a multi-step scenario to build the recursive portion one dataset after another.
For further assistance, I would suggest you open a support ticket. Please include the diagnostics in the support ticket. From the job page, click on Actions > Download job diagnosis. the support ticket.
