This item has been identified as an outstanding known issue as of the March 10, 2018 platform release; a workaround is provided.
Three aggregation levels available for inclusion in a time range are rejected if they are not also added to the Model Calendar. These areTotal of All Periods, Year to Date (YTD), andYear to Go (YTG).
For example, if a source line item has a time range applied that includesTotal of All Periodsaggregation, butTotal of All Periodsin NOT included in the model timescale, the following formula is rejected:
Result = Source[SELECT: TIME.All Periods]
The same issue also occurs forYear to Date (YTD), andYear to Go (YTG)aggregations.
Add the level of aggregation to the Model Calendar in Settings > Time > Model Calendar > Includes.