The indicated zone name identifies a target or distribution zone that was specified more than once on the ZONES operand. The indicated zone is defined by a ZONEINDEX subentry in multiple global zones and their ZONEINDEX subentries identify the same CSI data set. Duplicate name zones are allowed, but they must reside in different CSI data sets. The duplicate was specified using either a zone name only (the ZONEINDEX subentry is the SET BOUNDARY global zone), or using a different alternate global zone CSI data set name.