Errors with AB Trends tool: data is not consistent with the test start date

[MAAbdullahAlMubarah]

Dear All , 

I have a problem similar to this thread :

https://community.alteryx.com/t5/Alteryx-Designer-Discussions/Errors-with-AB-Trends-tool-data-is-not...

I'm not sure why the solution answer of this thread is to contact Udacity support? It shouldn't be, Udacity is instructing us to put all technical problems we encounter it for assignment here on this website, I Included the WF and the DB with this thread, your kind help will be appreciated.
Note the Test Period will be: 29-04-2016 for 12 weeks.

[KaneG · Accepted solution]

The issue is your Test Start Date. There is not enough data before it. If you are looking at 12 periods, then your earliest Start Date will be 22nd July (1 year + 12 weeks)