The name must be one word and no longer than 127 characters. The first character of the name must be a letter or underscore (_). The remaining characters may be letters, digits, hyphens (-), underscores, or periods (.).
(Optional) Select Transform Incoming Data, and then click Browse Livecycle browse button To create a data connection to an XML data file to search for and select the XSLT file that will be used to transform incoming data for the form design.
(Optional) Select Transform Outgoing Data, and then click Browse Livecycle browse button To create a data connection to an XML data file to search for and select the XSLT file that will be used to transform outgoing data for the form design.
See also 

To create a data connection to an XML data file