Count distinct not working

[S13]

Hey all I have an issue where distinctcount does not seem to be giving me the right results. 

I have two tables (a & b) with b being a duplicate of a. I have written a measure for both tables to count the unique ids (see below).

Triggers = DISTINCTCOUNT(a[RECOMMENDATION_ID])

Distinct_Count = DISTINCTCOUNT(b[RECOMMENDATION_ID])

The result that I am getting are different with table a being the correct one. 

I am not sure why b is return the 541k result. Moreover, when I look at the table b in the "table view" and highlight the recommendation_ID column, it is giving me the correct distinct count - see below +1 added on purpose.

I've been searching for the last two days for a solution with no luck. Any help would be appriciated as I am stumped. Thanks.

[Anonymous]

I am not sure why Distinct count would be more than Count all?

How can 1881631 would be distinct count ?

[tackytechtom]

Hi @S13 ,

Could there be a filter on the visual/page/report? Otherwise, do you have the possibility to share your file? 🙂

/Tom
https://www.tackytech.blog/
https://www.instagram.com/tackytechtom/

[S13]

Thanks for the reply. There is no filter on the page/report/visual. Unfortunatly it is a work related project and cannot share the file... wish I could though since I feel like it's probably something simple that I am over looking.