Gets the period dimensions.

This request should be used to retrieve information around fiscal periods and fiscal years, hereunder the fiscal period year name, the fiscal period names, and the corresponding date ranges. This would be information that is found under Administration->Fiscal years. Sample value of Period Dimension

"Period_Key": 14631, "Engagement_Key": 4316, "LegalEntity_Key": 7854, "FiscalYearName": "2015", "FiscalYearStart": "2015-01-01T00:00:00Z", "FiscalYearEnd": "2015-12-31T00:00:00Z", "Period": "2015-01-31 Jan", "PeriodName": "Jan", "PeriodSequence": 1, "PeriodStart": "2015-01-01T00:00:00Z", "PeriodEnd": "2015-01-31T00:00:00Z", "PeriodFrequency": "Month end", "PeriodStatus": "Reopened", "PeriodCreatedDate": "2015-05-05T13:04:11.154Z", "FiscalYearPeriodId": 6101 "EngagementGuid": "3fa85f64-5717-4562-b3fc-2c963f66afa6",