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Shohrat MuhamovShohrat Muhamov 

App Customization Specialist Error

I was working on App Customization Specialist superbadge and encountered issue below when i tried to check the challenge:

Challenge Not yet complete... here's what's wrong: 
There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: TKJLZWLR

Can someone help with the issue please?
Best Answer chosen by Shohrat Muhamov
SandhyaSandhya (Salesforce Developers) 

Make sure you have formula field for "IsShiftVolunteer" instead of checkbox.Refer below linlk for similar issue.

Please mark it as solved if my reply was helpful. It will make it available for other as the proper solution.
Best Regards