The <AuthInfo> element contains address and card verification information. 
<AuthInfo>
  (AVSResult)
  (CVVResult)
</AuthInfo>
Element Name
Description
Type & Length
<AVSResult>
Optional results of the address verification test.
.
String (1)
<CVVResult>
Optional results of the card verification number test.
.
String (1)
<AuthInfo> Element
<AuthInfo>
  <AVSResult>Y</AVSResult>
  <CVVResult/>
</AuthInfo>