Hi Kelly,
So I think this transaction does not start the debugging itself but it creates test work items for you.
If you want to debug the work item, you still need to set breakpoints first in the method attached to the corresponding step then execute the work item.
I set external breakpoint for method but control didnt stopped on break-point.
If this tcode works it will solve lots of headach of copying data from workflow wi container to SWO1 /se24 tcode for instantiation for debuggign.
But some how this is not working .I will be really thankful for kindly guiding ahead.