Supplymentry Invoice with manual tax Entry

dear all,

GM

As per the Budget Change we make a desired changes in the existing tax code i.e BED 12.50%

Now the Customer need to enter a manual tax in the current pricing procedure for Supplementary invoice.

Also the Chapter ID is maintained with 12.50% so BED is calculating from chapter ID.

How to overcome in this situation??

Regards,

Shantanu