Digital Signature Shows Valid in Bluebeam and DocuSign Prepare & Sign but not Adobe

I am now just starting to have these issues after over a year of using BlueBeam. If I sign the document in adobe, everything is fine but I dont want to use adobe bc it takes forever so sign multi-page files. The Batch Signature feature of Bluebeam saves me so much time. 

In short:

When the first signature was applied, the document has been saved with a minor error. As we know, PDF viewers in general ignore or repair a lot of minor errors, so no viewer warns about it. Adobe Acrobat also ignores it. Usually that is. Except when checking for a signature (except the final signature of the document) whether there are any disallowed later changes, in that case that error results in such a validation failure.

(Most other validators ignore that error. But most other validators also do not even check for disallowed changes after a signature...)

Thus, tell the initial signer that their signing software has a bug and ask them (and all later signers) to sign again with a signing software without such a bug.

In detail:

At the end of each revision of a PDF there is a cross reference table or stream mapping object numbers to their respective position in the file. According to the PDF specification the cross reference of the initial revision must not be segmented.

In case of your document, though, it is segmented:

...
xref
0 5
0000000000 65535 f 
0000000018 00000 n 
0000001081 00000 n 
0000001148 00000 n 
0000001229 00000 n 
6 383
0000000000 65535 f 
0000000000 65535 f 
0000001402 00000 n  
...
0003339748 00000 n 
0003355369 00000 n 
0003356639 00000 n 
trailer
...

Thus, Adobe Acrobat will consider each signature in your PDF broken except the signature of the full document.

For more details see these stack overflow answers:

• https://stackoverflow.com/a/30551466/1729265
• https://stackoverflow.com/a/45163411/1729265
• https://stackoverflow.com/a/55939114/1729265
• https://stackoverflow.com/a/67641001/1729265
• https://stackoverflow.com/a/68806481/1729265

If you examine the errors from the signature panel "click to view this version" then click "View Report" in the banner bar of the signed version, you will see that Acrobat believes some content may have been altered;

Acrobat doesn't just validate the digital signature itself to determine signature validity, it also checks that the document doesn't have modifications that might alter the appearance. You can see that the digital signature portion is valid, but that the signature is marked invalid because of potential document modifications. I suspect that other viewers are not so careful.