Consider the following scenario:
In this scenario, you receive an error message that resembles the following:
            - You use a map in a Microsoft BizTalk Server project to do transformations.
 - Multiple destination schemas are used in the map.
 - One of the schemas is blank.
 
In this scenario, you receive an error message that resembles the following:
Error: Invalid input/output document into/from the transform. Does not have a single root node.