TaPlease refer to the following link for changes to the Hawaii Business Tax I. D. Number vs a federal ID #:
Difference in Hawaii Business Tax I.D. # and federal ID #
Could it be that you have a new number but are trying to use the old number?
I do not know where you are trying to enter it but, is it a location that is asking for your federal ID # or your new Hawaii Business Tax ID #?
If you do not know what your new Hawaii Business Tax ID # is you can call the number on the above link:
808-587-4242
