Drops an existing message type.
Transact-SQL Syntax Conventions
DROP MESSAGE TYPE message_type_name [ ; ]
The name of the message type to delete. Server, database, and schema names cannot be specified.
Permission for dropping a message type defaults to the owner of the message type, members of the db_ddladmin or db_owner fixed database roles, and members of the sysadmin fixed server role.
You cannot drop a message type if any contracts refer to the message type.
The following example deletes the //Adventure-Works.com/Expenses/SubmitExpense message type from the database.
DROP MESSAGE TYPE [//Adventure-Works.com/Expenses/SubmitExpense] ;
