We are currently using the AutoFiller function to take a DataTable full of data and rows to auto-fill a fill-in PDF form. If the DataTable contains columns that do not match any of the fields in the fill-in form, the AutoFiller creates a PDF document with the first row of the data source repeated over and over rather than there being different data filled into each one.
I determined this by returning columns I needed in code, but not in the form and the PDF document produced were all duplicates. As soon as I removed the columns that did not match field names, the PDF document produced all the correct data for each row in the data source.
Is it documented that the data source must match the form fields exactly? I can't remember. If not, I would think this is a bug.