RMDATIND BMMH2 Tax category classification issue

I am creating material masters using the direct input program RMDATIND. The structure BMMH2 has the fields for transferring the tax category classification by country. I have done this many times for sales areas that produce in or ship from several different countries. We now are converting a business that ships from 15 different European countries, each with its own VAT tax classification. The BMMH1 and BMMH2 structures and the RMDATIND program only allow for a maximum 9 different countries. If I try to create the material masters with only 9 of the countries, I get the "TAX category classification is not maintained" error. How do I get around this?