input tax credit on stock

I m existing VAT registered( manufacturer) and now migrated to GST. I have some purchase invoices on which I had paid excise duty also. my question is, could I get credit of excise as well as of VAT credit. entries against VAT credit have duly entered in books but excise amount has been added in purchase. if excise amount is taken as credit then I have to revise the VAT returns.
please advise me.