certification_type

Valid Values:

Value
"Appeal - Immediate"	"Appeal - Standard"
"Cancel"	"Extension"
"Notification"	"Verification"
"Add-on"	"Replacement"
"Certification of Current Cost and Pricing Data"	"Certification of Overhead"
"Certification Not Required"	"Final"
"Recertification"	"Initial"
"Reconsideration"	"Renewal"
"Revised"