We use workflow, but now workflow does not ran. So, we don't know how start or check it.
Thnaks and best regards,
Go to transaction SWDD or PFTC_DIS and enter your workflow number.
You can directly test your workflow here.
You will have to trigger the starting event of the workflow, and then go to transaction SBWP for workitems.
Hope it helps.
P.S. - If you could tell the forum your exact requiremnt, it will much easier to solve.