This field displays the time basis for the repeat interval. e.g. month, year.

X_PERIOD_BASIS is a fixed lexicon with the following values:
Saved
Value
Displayed Value
01 Year(s)
02 Month(s)
03 Semi-Monthly
04 Bi-Weekly
05 Week(s)
06 Day(s)
07 Hour(s)
08 Unit(s)