SOAP 1.1 and SOAP 1.2 differ in the XML namespaces these two versions use. Additionally, in SOAP 1.2, the action parameter in the

Content-Type

header replaces the

SOAPAction

HTTP header in SOAP 1.1.

Note that the SOAP interface for

Address Verification

is case-sensitive. Use of wrong cases for elements, parameters, or values could cause the request to fail. For elements and parameters, use exactly the same case that is given in the Request XML section of this document. For values other than boolean values use UPPERCASE. For boolean values, use either lowercase true or false or numeric values 1 or 0.