Hi Vadym, The logs I shared with you are from a customer using IPWS 3.4.0, which is the same their Interplay engine. Digging into it further, I found that the WS actually did send a reply of sorts, but it was empty, giving this XML parsing message: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog at [row,col {unknown-source}]: [1,0] Geoff