The tax location type is a value used internally to identify the type of location that is calling ZipAddressing and/or tax schedule selection. The primary sources are the following DynamicZip global constants:

By specifying the tax location type, a call to DynamicZip from another 3rd party product will refer to whatever setup options may exist for the customer, site or vendor. If the value is KD_LOCATION_UNKNOWN, then location type specific setup options will not be referenced.