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Mohammed Mehran RMohammed Mehran R 

Please check the custom fields on the Account object. Not all custom fields were found.

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AbhishekAbhishek (Salesforce Developers) 
Hi,

For all the Trailhead issues please report it here,

https://trailhead.salesforce.com/help?support=home#

So that our trailhead support engineers will look into it and get back to you.

I hope you find the above solution helpful. If it does, please mark as Best Answer to help others too.

Regards,
​​​​​​​Salesforce Support.
 
Pradhyumn BansalPradhyumn Bansal
Hi Mohammed Mehran R ,
           
           Please be sure you make all custom field which given in challange with given api names. May be some field is missing or API name is incorrect for any field.

If you find this answer useful please make it as solved answer.

Thank you.