Version Mismatch Error

Hello List, I have been using a SOAP service without issue until the company I am communicating with just upgraded their system. Now I get a Version Mismatch error when recieving requests - although I am getting the correct response back but PHP is giving the error? Any thoughts would be appreciated. I am using PHP's ext/SOAP. Below is a request/response: <?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://my.company.com/b2b/schema/6.1/"> <SOAP-ENV:Body> <ns1:activate-add-request> <header-info> <merchant-id>1234</merchant-id> <store-code>mycode</store-code> <agent-name>AAA1</agent-name> <operator-id>0</operator-id> <terminal-id>0</terminal-id> <pos-transaction-id>1100</pos-transaction-id> <datetime>2006-08-10T10:53:17-07:00</datetime> <pos-transaction-datetime>2006-08-10T10:53:17-07:00</pos-transaction-dat etime> <sender-id>PARTNER</sender-id> <program-id>SV</program-id> </header-info> <card-info> <swipe-flag>false</swipe-flag> <printed-card-number>1111111111111111</printed-card-number> </card-info> <add-wallet-content> <wallet-code>1</wallet-code> <quantity>25.00</quantity> </add-wallet-content> </ns1:activate-add-request> </SOAP-ENV:Body> </SOAP-ENV:Envelope> SOAP Response Received: <?xml version="1.0"?> <soap-env:Envelope> <soap-env:Body> <add-redeem-reply> <request-event>LP213</request-event> <pos-transaction-id>1100</pos-transaction-id> <px-transaction-id>2238158</px-transaction-id> <datetime>2006-08-10T13:53:19.019</datetime> <sender-id>PXS</sender-id> <response-code>416</response-code> <response-message>Invalid card number 1111111111111111</response-message> <trailer-width>0</trailer-width> <trailer-line-count>0</trailer-line-count> </add-redeem-reply> </soap-env:Body> </soap-env:Envelope> Ken Vandegrift kvandegrift@sharis.com <mailto:kvandegrift@sharis.com> Web Administrator Sharis Mgmt. Corp