Livecycle Designer: Error Messages

"Submit cancelled" error

If you select the submit button and go to the Object > Submit tab. You need to provide a destination for the submission. Either a http or email address. For example:

Also the file size is large, which may be because of the images, but is not helped by multiple fonts (Arial and Courier) that are embedded. Try replacing with a more efficient font and if common you can deselect embed font in the File > Form Properties > Save Options tab.

"Method:'sign' cannot be called because doing so would violate this:

Solution 1:The reason why your script is failing is because you have locked the date fields to the first signature and when this signed document is opened again then the script tried to re-assign values to the locked field  on "ready:layout" event. Since you are using the Static PDF you are getting this message. if it was a dynamic form then this message was not shown but the signature will be tampered for sure.

So the general rules to use signature in PDF is:

1) Ensure that PDF is not rendered again after the document is signed. I.e. Static PDF should be used instead of Dynamic PDF. As dynamic PDf is rendered every time you open the PDF document which can invalidate the signature.

2) Even if we use static PDF, we should not put the code in the initialized or document ready:layout event as this event will fire every time you open the PDF, only if you plan to lock these fields to a signature field.

Solution 2:
Adobe shows this error when you use the submit button for Data Signature only-->Sign Submission --> Sign data only selected. Instead select Sign Entire Submission