Error oracle.apps.xdo.XDOException

i get this error when in the Report Manager test one Report.

BI Publisher Error during Transformation
oracle.apps.xdo.XDOException

Any idea for this?

At 2015-05-28 13:37:36.338

[052815_133752678][oracle.apps.xdo.common.xml.XSLTWrapper][ERROR] XSL error:

<Line 45, Column 101>: XML-22008: (Error) Namespace prefix 'ref' used but not declared.
@Line 45 ==> <_C><xsl:value-of select="(.//ref:xdo0035)[1]" xdofo:field-name="ref:xdo0035"/>
[052815_133752679][oracle.apps.xdo.template.FOProcessor][EXCEPTION] java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at oracle.apps.xdo.common.xml.XSLT10gR1.invokeNewXSLS tylesheet(Unknown Source)
at oracle.apps.xdo.common.xml.XSLT10gR1.transform(Unk nown Source)
at oracle.apps.xdo.common.xml.XSLT10gR1.transform(Unk nown Source)
at oracle.apps.xdo.common.xml.XSLTWrapper.transform(U nknown Source)
at oracle.apps.xdo.template.fo.util.FOUtility.generat eFO(Unknown Source)
at oracle.apps.xdo.template.fo.util.FOUtility.generat eFO(Unknown Source)
at oracle.apps.xdo.template.FOProcessor.createFO(Unkn own Source)
at oracle.apps.xdo.template.FOProcessor.generate(Unkn own Source)
at glog.util.report.BIPTransformation$XSLFOProcessor. process(BIPTransformation.java:374)
at glog.util.report.BIPTransformation$BIPStylesheetTr ansformation.report(BIPTransformation.java:255)
at glog.util.report.BIPLocalReportGenerator.transform Data(BIPLocalReportGenerator.java:125)
at glog.util.report.BIPLocalReportGenerator.generateR eport(BIPLocalReportGenerator.java:196)
at glog.util.report.BIPLocalReportGenerator.report(BI PLocalReportGenerator.java:23)
at glog.util.report.BIPSessionBean.report(BIPSessionB ean.java:21)
at glog.util.report.BIPSessionServerSideEJBWrapper.re port(BIPSessionServerSideEJBWrapper.java:40)
at glog.util.report.BIPSessionHome_9wq2lz_EOImpl.__WL _invoke(Unknown Source)
at weblogic.ejb.container.internal.SessionRemoteMetho dInvoker.invoke(SessionRemoteMethodInvoker.java:40 )
at glog.util.report.BIPSessionHome_9wq2lz_EOImpl.repo rt(Unknown Source)
at glog.util.report.gen.BIPSessionSkel.report(BIPSess ionSkel.java:121)
at glog.util.report.gen.BIPSessionSkel.exec(BIPSessio nSkel.java:30)
at glog.webserver.wrapper.SkelImpl.execDispatch(SkelI mpl.java:16)
at glog.server.wrapper.WrapperSessionBean.execDispatc h(WrapperSessionBean.java:83)
at

Otm version : 6.2
Bi publisher version : 11