Length of Merchant Defined Fields

[kabam]

I am capturing free form text on a form that will use SIM for processing.  Once processed, the results will be sent to a Silent Post URL for further processing.  Are there any length restrictions for User Defined fields?  I couldn't fine any mention of this (one way or the other) in the SIM API documentation.

Thank you!

Michael 

[TJPride]

I checked a number of different documentation PDF's and did some Google searches and couldn't find anything either. It's probably safe to assume at least as much size as the maximum size for any other standard field however, so at least 255 characters. How much data are you trying to pass?