HELP - Definition of new tax codes in CRM

Hello,

we defined new tax codes in ERP for the condition MWST.

Those tax codes need now to be added in CRM to. I tried to download the tax customizing via download object dnl_cust_tax, but it didn^t work.

Normally the tax determination works via the TTE tax engine.

Do I need to add the new tax codes manually oder how can I download them to CRM?

Thanks

Jan