The value entered in the 577 Start field designates the number to start the codelist 577 Tablesuffix Red End. This value will be regarded if you chose Geom-ID as the Tablesuffix method.
The codelist 577 Tablesuffixes contains the name of the geometric that is mapped on S.40.I.01 and its NLS description.
Only one entry mapped on S.40.I.01 will be written into the codelist, although more than one geometric can have a specific tablesuffix.