Functionality of Transfer Order Description field

Summary:

For Transfer Order, there is a description field which is seen under Manage Transfer Orders. But this field is not updateable irrespective of whether you are logging an ad-hoc transfer order (from the Manage Item Quantities) or if the TO is getting created from an IR (from SSP)

So, what is the functionality of this field and when does it get populated?

Content (required):

For Transfer Order, there is a description field which is seem under Manage Transfer Orders. But this field is not updateable irrespective of whether you are logging an ad-hoc transfer order (from the Manage Otem Quantities) or if the TO is getting created from an IR (from SSP)