JavaScript invalidates the certified document

[nikhilv86783103]

I would like to display all the attachments in the document in a list which are attached by addAnnot. For that purpose I created a list which will run below script on mouseUp event.. But whenever the script runs, it basically invalidates the certified document with an invisible signature. I need to prevent any unauthorized modification in the document, for that purpose I created certified document. Any Idea how to make it right or please suggest me if I am doing something wrong as I am new to acrobat development.

attachList = [];

var annots = this.getAnnots();

var aAttach = annots.filter(function(a){return (a.type=="FileAttachment");});

for (var i = 0; i < aAttach.length; i++)

attachList.push(aAttach[i].attachment.name);

event.target.setItems(attachList);

[Test Screen Name]

You need to do this differently. You are preventing all modifications, there aren’t “authorised” modifications. You can’t be Modifying a verified document for any reason, and setitems will do that. Perhaps you can do this immediately before certifying, knowing the list won’t change.

[George_Johnson]

https://forums.adobe.com/people/Test+Screen+Name  wrote

You need to do this differently. You are preventing all modifications, there aren’t “authorised” modifications. You can’t be Modifying a verified document for any reason, and setitems will do that. Perhaps you can do this immediately before certifying, knowing the list won’t change.

When you add a certification signature, you can specify certain modifications that are allowed without invalidating the signature. Changes like filling form fields, adding annotations, and signing digital signature fields.

[nikhilv86783103]

That's right. I just want to display the attached documents in a list using 'setitem' dynamically whenever new attachments got added. At the same time prevent any modification in the form fields. Since I cannot proceed with both, I think adding an invisible signature before rolling it out to prevent any modifications. I think that will do the job. Correct?

[George_Johnson]

You can use a certification signature to prevent any further changes, yes, if that's what you want. I thought you want to allow certain changes after you sent it out though (i.e., adding file attachment comments), which is why I suggested what I did.

[George_Johnson]

If you just need to display the list of attachments, you could use either a multiline text field (changing a field's value should be OK), or an app.alert dialog, or even writing to the JavaScript console and displaying it.