Compares two HL7 messages and displays the differences.

As you can see below from the example the tool highlights the fields that are different from one another. Changes are colored red, additions colored green, and deletions are highlighted with a strike-through font. 

There are a number of ways to compare 2 messages depending on which tool you are in.

From the Message Editor window.
From the compare window 
From HL7 SQL and Sql Loader tools