Hi
DMSHB - Debit/Credit amount in Local currency with +/- signs, unlike the debit and credit column it will show up with signs.
Also,
It is the amount of the current balance for the period.Check this number against the number you see in FS10N for a particular account.
I have recently posted a blog on how to reconcile the data b/w ecc and bw, check that , it will help you.
Hope this helps...