Processing Restrictions

The following restrictions apply to user exit processing:

If modify and/or insert record processing is used, the user exit must call the subroutine GVMODINS before it returns to GVRESTOR. GVMODINS is linked into the CA FAVER target library during installation. GVMODINS should be included in the link edit of the exit.
KSDS records must always be in key sequence. This applies to modifying keys and inserting new records.
Records may neither be inserted nor have their lengths change when processing an RRDS.