EDITPROCs and VALIDPROCs for handling basic and reordered row formats
You can check the row format type (RFMTTYPE) to ensure that edit procedures (EDITPROC) and validation procedures (VALIDPROC) produce predictable results.
If you write new edit and validation routines on tables
with rows in basic row format (BRF) or reordered row format (RRF),
make sure that EDITPROCs and VALIDPROCs are coded to check RFMTTYPE
and handle both BRF and RRF formats.
If an EDITPROC or VALIDPROC
handles only RRF, make sure that it checks RFMTTYPE and returns an
error or warning if it detects BRF. If an EDITPROC or VALIDPROC that
handles only BRF is to be used on tables in RRF, make sure that it
checks RFMTTYPE and returns an error or warning if it detects RRF.