The STA field is an ALEPH field that contains information on the
status of the record. For example, you could add an STA field to
mark catalog records that are provisional by adding the
following field:
STA $$aPROVISIONAL
The STA status is a free-text field that can be user-defined to
suit the needs of specific sites. There are two exceptions:
STA $$aDELETED (for records considered "deleted")
STA $$aSUPPRESSED (to prevent record display)
Indicators - Both undefined; each contains a blank (^)
Subfield Codes
$a Status (NR)