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Kenney BrewKenney Brew 

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. reference error id: TAEKROHI

I recieved the below error on my Process Builder Challenge.  Is there a fix for the reference error id: TAEKROHI?  I added a Google lInk to the layout page, but the issue still persists.

Message below:

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: TAEKROHI
Amit Chaudhary 8Amit Chaudhary 8
Can you please namespace or domain in enable in your org. If yes then please create new developer org and try again same.

Please check below post for trailhead FAQ
1) https://developer.salesforce.com/page/Trailhead_FAQ

I think my work is correct, but the challenge verification is still giving me an error.
If you think you've completed the challenge correctly, but you are still getting errors, make sure that you are using a fresh Developer Edition that does not have a namespace prefix. (What is a namespace prefix?) If you are still having trouble, use the “Share Feedback” button in the footer or on the right column to send a support request.

Let us know if this will help you

THanks
Amit Chaudhary
JyothsnaJyothsna (Salesforce Developers) 
Hi Kenney,

Sorry for this issue that you're encountering. Can you please double check
that your Developer Edition Org does not have any namespaces setup in it?Trailhead does not support namespaced DE Orgs and so if you have a
namespace registered for the DE Org, you'll need to sign up for a new one
and complete this module there.

When trying trailhead, we encourage users to create new Dev orgs such that the previous config changes do not affect the trailhead challenge settings.

To login into trailhead you can use your old org but for activity(code and config) related changes you can use new org. In such a way all point will add in your old profile only.
Please check the below link for help.

https://developer.salesforce.com/forums/ForumsMain?id=906F00000005JciIAE

Hope this helps you!
Best Regards,
Jyothsna
Matz MatzMatz Matz
Similar but different?

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: TBBGOKJM