A fixed field that comprises the first 24 character positions (00-23) of each record and provides information for the processing of the record. Only three positions are implemented in UNBIS Thesaurus records.

Position 05: 
Record status. Indicates the relation of the record to a file.

c = Corrected or revised.

n = New.

Position 06: 
Type of record. Indicates the characteristics of and defines the components of the record. In UNBIS, the default value for Thesaurus records is z.

z = Authority data.

Position 17: 
Encoding level. Indicates whether the record is complete.

n = Complete authority record. The record meets national level record requirements. 

o = Incomplete authority record.