I had a problem with a form that couldn't be submitted to Formscentral because of "unsupported characters". II found out that the unsupported characters were three ü (u Umlaut, often used in the german language) the user "wrote" in a text field. Probably he copy/pasted the text from Word.
Is there a possibility to paste copied text to Acrobat Reader in a "text only"-format?
Is there a way to prevent the user to fill in unsupported characters?