Hello,
I am also having an issue on that part of BAS Superbadge, which the following error message:
Challenge Not yet complete... here's what's wrong: 
The 'Accounts by Market' report does not show the coThe 'Accounts by Market' report does not show the correct level of detail

     

 I have checked the requirements and I cannot understand what the issue is. Any advice would be much appreciated!

Thanx
Marianne

I keep getting the following error message, even after trying in 3 new playgrounds: 
Challenge Not yet complete... here's what's wrong: 
Some billing state names do not meet data quality standards, or the data import was unsuccessful.

I followed all of the instructions:
1. Installed unmanaged package in the new playground
2. Added Residential picklist type to Accounts
3. Cleaned up Account list:
a. Removed "Household" from Account name (this wasn't specified, but it didn't seem necessary)
b. Removed duplicate records
c. Changed accounts in ALL CAPS to only cap first letter of first and last name
d. Changed state name to 3 letter State code
e. Saved as .CSV file
4. Imported list using Import Wizard

I received an email confirming the import was successful with 11 rows processed and I see the accounts when I search up accounts in the playground. 

Thanks in advance for any help!