Field record relation indicators are used to associate fields within a particular record type when that record type is one of several in an OR relationship. This entry reduces the number of lines that must be written.
The field described on a line is extracted from the record by the RPG IV program only when the indicator coded in positions 67 and 68 is on or when positions 67 and 68 are blank. When positions 67 and 68 are blank, the field is common to all record types defined by the OR relationship.
Field record relation indicators can be used with control level fields (positions 63 and 64) and matching fields (positions 65 and 66).