The VAT registration code or other tax registration number
for this customer. You can enter up to ten Tax Ids.
You can configure SunSystems to validate that the Tax Ids entered on your
customer records are unique. If Tax Id Validation is being used, when you
click OK to save this customer
record, SunSystems checks whether the
Tax Id you enter is already registered on another customer record within
this business unit. If it is, you are asked to confirm that you wish to
continue saving this record with a duplicate Tax Id.