HP 3000 Manuals

Indexed Sequential Files with Duplicate Alternate Keys [ COBOL/HP-UX Compatibility Guide for the Series 700 and 800 ] MPE/iX 5.0 Documentation

COBOL/HP-UX Compatibility Guide for the Series 700 and 800

Indexed Sequential Files with Duplicate Alternate Keys 

If you convert an RM/COBOL indexed sequential data file with duplicate
alternate keys, the time order of records with duplicate alternate keys
is not preserved in the conversion.

MPE/iX 5.0 Documentation