How to merge two pdfs with assembler service using External Data URLs in DDX document?
Hello everyone,
I am facing issue in merging two pdfs with assembler service using external data URLs in DDX, which is location of the PDF from my local file system.
I am following the below process:
Environment details - AEM 6.5 (On-Premise) Forms-add-on package (adobe-aemfd-win-pkg-6.0.640.zip), OSGI forms & output service.
The DDX being used:
<?xml version="1.0" encoding="UTF-8"?>
<DDX xmlns="http://ns.adobe.com/DDX/1.0/">
<PDF result="AnAssemblyAlso">
<PDF source="C:\\DDX_PDF\\GeneratedPDF_modify_LocAdd.pdf" >
<PDF source="C:\\DDX_PDF\\pdfB-MarketingContent.pdf">
</PDF>
</DDX>
Created a servlet to merge the pdfs using the assembler service.


While testing via postman, getting null pointer exception.

Snippet of the log:

Is this situation achievable? If yes, can anyone please suggest how to achieve the same?
Pls provide any resources or leads to understand if there is any limitations.
Thanks
