I belive this information can help you.
Back and Restore
Form Data Integration
Generate 3D PDF
Thank you guys.
Jasmin, your afterpost help was very helpfull. It is working fine now.
Problem was that I had to pass a filename in a separate variable to complete the invocation (conversion) process and I was struggling with attachment at the begining too.
I'm calling GeneratePDF method using WSDL. I have no issues for createPDF().
faultString: ALC-DSC-003-000: com.adobe.idp.dsc.DSCInvocationException: Invocation error.
Any help would be greately appriciated