Customer Master tax classification

Hello,

We are updating the Customer Master via IDoc interface using DEBMAS06 and passing tax indicator information in segment

E1KNVIM. After the customer is created/updated using transactions XD01/XD02, the tax classification and description are not populated when viewing the customer in trasaction XD03. I have validated the incoming tax type(E1KNVIM-TATYP) and classification(E1KNVIM-TAXKD) data. Any ideas? Creating a customer manually is not a problem since I enter the tax classification. This data is on the Billing tab of transactions XD01, 02, 03 by the way.

Thanks,

JR