Hi Basha,
If you want to apply service tax on unplanned delivery cost, then, pls post MIRO with subsequent debit with amout, say 100.
Select the service tax code at item level and also select serive tax code at header level, calculate tax.
Below will be a/c entry :
vendor Cr 112.36-
RM inventory Dr 100
S.Tax. receivable Dr 12
ECS S. Tax receivable Dr 0.24
HCS S. Tax receivable Dr 0.12
Hope this will resolve your problem.
Regds,
Nilesh