With the release of the IBM WebSphere Application Server Liberty 22.0.0.9 fix pack on the IBM i OS in the October 2022 IBM i HTTP Group PTF level, SOAP web services in Integrated Web Services (IWS v2.6) and Integrated Application Server (IAS v8.5) begin to fail with a “prefix cannot be “null” when creating a QName” SOAP fault error.
IBM i HTTP Group PTF level introducing the issue:
7.5 – SF99952 level 4 7.4 – SF99662 level 24 7.3 – SF99722 level 41 7.2 – 5770SS1-SI80975 This issue affects all platforms and is introduced with the IBM WebSphere Application Server Liberty 22.0.0.8 and later fix pack levels. This includes the 22.0.0.9 Liberty fix pack level installed with the October 2022 IBM i HTTP Group PTF level.