Purchase from Excisable and Non excisable Supplier

Hi,

We have Item purchases from both excisable supplier and non excisable supplier. Excisable supplier provides Excise Invoice , the credit of which is also taken. Non excisable supplier supplies Item without any excise. Requirement is that the purchases from Non excisable supplier should not reflect in RG registers. Currently based on item attribute , we see RG entry on purchases from non excisable supplier and on delivery of the same to Non bonded register, there is negative entry.

Client requirement is that there should not be any entry in RG register for purchases from non excisable supplier. Also we do not want to define another Item.