There are some form related settings which are not available in InDesign. Setting the number of characters is one of them. However, if you create the PDF (File > Export > Adobe PDF (Interactive) and open in Acrobat Pro you can edit them. In Acrobat X Pro, you would choose Tools > Forms > Edit. In form editing mode, double-click on the text field and look at its properties. On the Options tab, you can set the number of characters.
Thank you this has been very helpful!
..... so, why do u have to go to all that trouble to restrict the number of characters in InDesign? I am sure it cant be that hard for InDesign to add that funcationality - lets say it takes 40hours for them to code it into the program..... if they do it it will save HUDNREDS of THOUSANDS of hours of their customers having to go through another program to create it..... gotta be worth it.
i mean flash has that capability... and i think dreamweaver too? why this simple oversight??
When a new feature is introduced (as the form feature was in InDesign CS6), it's virtually impossible to include all possible features. There is only a limited amount of engineering time, and it has to be spread over many different features and tasks. In fact, in the CS6 timeframe, while that feature was added, a tremendous amount of engineering time had to be spent entirely re-writing InDesign to use the Apple "Cocoa" technology (a requirement to continue to run on future Macintosh computers), and to move to a 64-bit technology.
If you'd like to request additional form features, put in your request here. Be sure to make a good case for why that is a particularly important feature:
The fact is no application can do all things. That's why most people buy the Adobe Creative Cloud subscription, or Creative Suite 6. Many features can be best done using other applications.