Exception in method when trigger PDFObject WS

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Hi,

wonder anyone do before the PDFObject Tutorial.

as i try to create a new Web Services the concept is about the same but different types...

but somehow i encounter errors...

as the WS has 4 methods

createPdf (test.types.p1.CreatePdf parameters)

extractData (test.types.p1.ExtractData parameters)

getData (test.types.p1.GetData parameters)

getItemValue (test.types.p1.GetItemValue parameters)

but then when i trigger the createPDF methods i get this error

Exception in method com.sap.tut.ejb.pdfobjectservices.PdfObjectLocalLocalObjectImpl0_0.createPdf(java.lang.String,java.lang.String,java.lang.String,java.lang.String).

extractData

Exception in method com.sap.tut.ejb.pdfobjectservices.PdfObjectLocalLocalObjectImpl0_0.extractData(java.lang.String).

getData

Exception in method com.sap.tut.ejb.pdfobjectservices.PdfObjectLocalLocalObjectImpl0_0.getData(java.lang.String).

so wonder how to overcome it.. is there any mistake i have done or errors i have make so have this results

Regards

Jia Jun