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Jason KedzuchJason Kedzuch 

playground setup area

I cannot complete Trailhead Unit 1, and continue to receive the below error message:Challenge Not yet complete... here's what's wrong:  The 'Trailhead_Data_Manager' app was not found. Please follow the requirements and ensure the wave enabled org is setup correctly.
Arvind KumarArvind Kumar

Hi Jason,

If you are doing challenge correctly then it can be linked issue. You have to link Trailhead to salesforce.

Follow the below link, do set up your salesforce org to trailhead & complete your challenges. 

I hope it would be more helpful for you.

If it solves your problem, mark as a solution.

Arvind Kumar