Can't add credit card to vault in web services

SOLVED

Hello!

We trying to use web services for our shopping cart on web site and now we are testing different calls provided by it.

We have no problems with orders and customers creation, but have problems with credit cards.

When we call AddCreditCardToVault we get:

"Could not add credit card to vault:"

And no additional details... When we add credit card via desktop version of MAS Sage 100 ERP - no problems.

Can you please help me? Maybe we need to activate some security or configuration setting?

Thanks a lot.

Dmitry