OK Guys,
i have found the solution... It was very easy...
First i have add isVatId conditions list as follow in system.lib.php
PHP Code:
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Furthermore, i have added the language phrase for isVatId (vatcheck).
So i can now create a function with name isVatId in rlValid.class.php and can assign them to the VAT-ID field.
At Last i just have to modify the above code and paste it into the isVatId function.
I have done as follow
PHP Code:
Only registered members can view the code.
Now we have add a new validcheck for account vat-id field.
NOTE! I check with this above code only German and Austrian VAT-ID.
If you want to validate vat-id by other european countries, the code must be extended and customized.
Regards
Steffen