pdflatex does not support updated version pdf creation

Question

I am using pdflatex filename.tex command to create the PDF document.

But the pdf file produced by default version 1.5.

But i need a PDF/X-1a version.

I am using below commands to change the pdf version:

\pdfminorversion=5
\pdfobjcompresslevel=5

But I am unable to change the PDF version. The below preflight Error report for your reviews. I am highlighting problem found errors.

How to get get PDF/X-1a version through the pdflatex commands.

MWE:

\documentclass{article}

\usepackage{pdfx}

\pdfminorversion=5
\pdfobjcompresslevel=5

\begin{document}
Hello World
\end{document}

Answer 1

You'll need to find out which package or command in your tex-file destroys the compliance with PDF/A 1a. Maybe you can start with a very easy document and then add packages and content:

First, compile this document:

\documentclass[a4paper]{article}

\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\usepackage[a-1a]{pdfx}

\usepackage{blindtext}

\begin{document}

\blinddocument{}


\end{document}

According to Adobe Acrobat Standard V 10 the PDF meets the PDF/A standard. I'm using texlive 2016, up to date.

Then add your packages and some content and find out, which package or content causes the infringement of the standard.

However, according to the manual of pdfx, "1a" is not fully implemented, but e.g. 1b.

That leads to the question: Why do you need "1a"?