SAMEPERIODLASTYEAR NOT WORKING

Hi， Anonymous 

SAMEPERIODLASTYEAR  is a time-intelligent function, so it is recommended to perform this function on a calendar table containing consecutive dates.

Make sure you use  

 CALCULATE([Measure], SAMEPERIODLASTYEAR(Calendar[Date]))

rather than

 CALCULATE([Measure], SAMEPERIODLASTYEAR(Facttable[Date]))

You can also try using filter and DATEADD . The dates returned by SAMEPERIODLASTYEAR  are the same as the dates returned by this equivalent formula: DATEADD(dates, -1, year)

Other related threads:

Function 'SAMEPERIODLASTYEAR' expects a contiguous selection Issue 

Contiguous date selection error - YTD LY 

sameperiodlastyear only works with contiguous date selection 

Best Regards,
Community Support Team _ Eason