If your name (first and or last or both) has legally changed, CSI requires copy of the government issued documentation to make the change.
A government issued document that indicates both names (i.e. change of name certificate; marriage certificate; driver’s license). If it is to update full legal name the driver’s license is sufficient.
Note* If only last name change is being requested, you will have to provide a second piece of id with previous last name in addition to the driver’s license.