A conversion where the characters that exist in both the source coded character set identifier (CCSID) and the target CCSID have their integrity maintained. Characters that are not included in the target CCSID are presented to the user as substitution characters. This substitution is permanent. Any loss of character integrity is permanent. An EBCDIC-encoded character that is in the source CCSID but not in the target CCSID is replaced with 3F.