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Christian AndrewsChristian Andrews 

{Trailhead Issue} - Create Sharing Rules - Customer Rollout strategy

Salesforce is pushing an error back on the trailhead Module, Create Sharing Rules - Customer Rollout strategy, that says Edna Frank does not exist within my Org, yet I am sure that a contact, and account have been created for this "customer". Please help me get through this. 
NagendraNagendra (Salesforce Developers) 
Hi Christian,

I have complete this challenge and here is my solution.

1. First, set up the external sharing model with Case set to private
User-added image2. Then, enable Customer Portal settings, and create a sharing set titled Share cases with customers for the Customer Community User Profile
User-added image 3. Create a customer community user from Edna Frank's contact record and ensure that the account associated with Edna Frank has cases associated with it.

This step will resolve the issue: The "Customer Community User" for the contact "Edna Frank" is not created properly.
User-added image4. Tada! enjoy it ^_^
User-added image

Hope this helps.

Please mark this as solved if the information is helpful.

Thanks,
Nagendra