Mariyadas,If the error is true, it can be extremely difficult to find
problems in the PDF syntax and find them. If you can figure out that
nature of what's wrong, we might be able to see what led to that. Can
the PDF be opened in Acrobat? There are some fixup tools in Acrobat's
Print Productions > Preflight tool that can sometimes restore
consistency. Tell more about the life cycle of the PDF?Regards,Mattkew