Hi,
Per SAP documentation, it seems that you can specify a checking horizon per budget period value of the control object. Please read the 'Features' section of the link below:
http://help.sap.com/erp2005_ehp_06/helpdata/en/60/fe46d64e424551bedbe3c8dbf5fef7/frameset.htm
I do not have budget period turned on. Can you check whether 'checking horizon' is available for control object derivation?
Regards,
Ming