Relative Period Duration The context that allows reported data to be categorised according to time durations relative to a particular date. Y0 Current Year Y0Minus1 Current Year minus 1 Y0Minus2 Current Year minus 2 Y0Minus3 Current Year minus 3 Y0Minus4 Current Year minus 4 Y0Minus4Plus Current Year minus 4 or more Y0Minus5Plus Current Year minus 5 or more Y0Plus Carried forward to later income years Y0Minus10SAP 10 financial years from the current financial year for all Substituted Accounting Period (SAP) entities. This means from the earliest balancing entity to the latest balancing entity will span over three financial years All Sum of a number of periods within the context of the report Y0Minus Brought forward from previous years Middle Year Middle year Y Previous Carried forward from previous year Y0 Plus 1 Carried forward to next year Y Middle Carried back to middle year