It indicates if the name of the wallet account holder and the name of the cardholder match or not..
Source
<xs:elementname="NTRSWalletData"type="NTRSWalletDataType"minOccurs="0"xmlns:xs="http://www.w3.org/2001/XMLSchema"><xs:annotation><xs:documentation><pxmlns="http://Hps.Exchange.PosGateway">Risk data of the wallet.</p></xs:documentation></xs:annotation></xs:element>