You can generate sample data to print with your form instead of creating a sample data file using Acrobat. Also, if your form contains repeating subforms or subform sets, you can specify the number of times the data will be repeated when you print the form.
LiveCycle Designer ES generates sample data that is valid for the corresponding objects in the form, with a few exceptions:
Specify which data file to use when printing the form. The next time you print the form in LiveCycle Designer ES, the sample data will appear in the respective objects.
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Note:
If the Print toolbar button is not visible, you can add it to your toolbar by selecting Tools > Customize > Commands and then dragging the Print icon from the File category to one of the LiveCycle Designer ES toolbars.
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See also 

To automatically generate sample data to print with your form