Values for 0FISCPER display as "Z1/008/2006" - how can I remove the "Z1"

Hello,

When I run a report in Bex, Fiscal Year/Period (0FISCPER) results display with a "Z1" in front of the month. For example, I would like to see results like:

005/2006

006/2006

007/2006

but instead I see "Z1" appended to beginning of each:

Z1/005/2006

Z1/006/2006

Z1/007/2006

Any thoughts on how to remove the Z1 via a setting in Bex or the Admin Workbench?

Thank you.