PAC unhandled exception: MCID 1 already present.

[markh69817861]

I received this pop-up when running a PDF through PAC. I don't know what it means, so I don't know how to fix it. I'm not clear on what an MCID is or how it functions, so I need help understanding the pop-up and also resolving whatever is causing the pop-up. Note that the PDF otherwise passes PAC and Acrobat's Checker.

[hammer0909]

Is this a PDF that you created by combining multiple PDF files into one? 

[markh69817861]

Yes. A client combined it and we couldn't change that.

[markh69817861]

Chad: This started as a series of combined Word documents (not PDFs--I reread your post). We converted and added redaction boxes where the client told us to do so. There are a series of 18 of these, ranging from maybe 10 pages to ~100. Only 3 of the 18 have this pop-up, and it's not always "MCID 1." Sometimes it's "MCID 0" or "MCID 2."

[hammer0909]

This is common when combining files. Are you able to share the file with me?

[markh69817861]

Yes. Please find 1 of the 3 problem documents attached. Thanks for your help!

[Adrika Bhadauria]

Hi there! I am Adrika Bhadauria. I saw this problem today only and resolved this problem within 30 minutes. Can anyone check the attached PDF and tell me if it's correct?

[Narendra Kuma38176939m7yq]

Hi Adrika,

Good day!

Can you share the details how you have fixed the MCID error in the file.

Thanks,

Narendra.

[EcomBack_1]

Could you please provide us with the detailed solution?

[ls_rbls]

++Adding to the discussion,

Which PAC version and operating system are you on?

It would be helpful if you also share a screenshot of the PDF/UA check after you click on the start button.

When you run the PAC console post the screenshot with emphasis on the elements that currently show a yellow warning triangle amd any other element identified with a red X for  partially accessible elements.

That said, ca you confirm if one of those warnings is related to the Font type used?

[markh69817861]

[ls_rbls]

Just additional curiosity:

What do you get on the WCAG tab?

[markh69817861]

Sure, I get a color contrast fail (which I always get for every document, even when we've tested with CCA and the document passes). Other than that, green checks all the way down.

[markh69817861]

As I mentioned, this document otherwise passes PAC (2021). There are no errors, only this pop-up. 

[Ganesh_In]

Hi 
There is any solution for the above issue. MCID 2 already present

Thanks

Ganesh.R

[hammer0909]

I haven't found a good solution other than "try again". Typically I encounter this error when I combine several files into one. The MCID is burried as an attribute of a tag that is painfully time consuming to find. I can't tell you what actually causes it. But usually if I combine them again, I can get a good file without the error. I recommend using the Organize Pages tool to combine files. I've had the best luck with that method.

[hammer0909]

Recently, a few products have emerged on the market that are giving us the ability to deal with duplicate MCID errors. I'd take a look at GrackleDocs and PDFix.