Excise values are not copying in my excise invoice

Hi experts,

When am doing factory sales with tranasaction code j1iin from billing The excise duty is not copying into my excise invoice. What could be the reason what needs to be done to run this scenario perfectly.

excise invocie is generarting with out value. Iam working ecc 6.0 version and taxinn procedure.

Thanks & regards

Rack29

T