XL One Reporting
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A Reporting Calendar Selection Type is an excellent way to restrict the range of options presented to the report user, and to decrease the likelihood of illogical ledger comparisons being selected. Typically a System Variable is used to store the current XL One Reporting Period, which in August 2013, would be 1314-02 as per the picture below.
The report is written to use the Reporting Calendar to derive its ledger and period values.