Verifying Formats 
The verification process checks the mapping settings or the validation settings of the target tree nodes:
XML: Checks the mapping settings of only the nodes required by the imported XML schema and the validation settings of all the nodes.
You can import an XML schema by selecting one of the following options when you add an XML target file:
Import an XML schema
Import the structure from an XML document
CSV: Checks both the mapping settings and validation settings of all the nodes.
TXT: Checks only the validation settings of all the nodes.
To verify the format, do one of the following:
Click
(Verify).
Choose .
Press the F7 key.
After the verification is finished, messages of error, warning, or information appear on the Message tab.
To display different types of messages, choose the Errors, Warning, or Information button. By default, all types of messages are displayed.
To export messages, right-click any space on the Message tab and choose Export All. In the Save As window, specify the file name and choose the Save button.