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Matt SuellentropMatt Suellentrop 

I am receiving this error VZZOBMFN on App Customization Specialist Superbadge

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: VZZOBMFN
VinayVinay (Salesforce Developers) 
Hi,

Try in new playground org if you still see issues kindly reach out to trailhead support team.

https://trailhead.salesforce.com/help

Kindly let me know if it helps you and close your query by marking it as solved so that it can help others in the future.

Thanks,
Matt SuellentropMatt Suellentrop
Does that mean I do it all over? Everytime I create a NEW playground it is a NEW username, wouldnt I need the same username to verify everything I have already done?
VinayVinay (Salesforce Developers) 
Yes,  you can create new playgroud org and that should work,  if you do not want to create one then I would suggest you to reach out to trailhead support team and they can help you.

https://trailhead.salesforce.com/help

Note: New playground will fix the issue.

Thanks,
Matt SuellentropMatt Suellentrop
It isn't allowing me to create a NEW Playground. 
User-added image
Matt SuellentropMatt Suellentrop
Disregard that I disconnected one, but when I created the new it doesnt have any of the work I created under the previous playground. 
VinayVinay (Salesforce Developers) 
Unfortunately, new playground doesn't have any previous configurations,  you would need to redo them again here,  As mentioned above if you do not want to use new playgroud log a case with trailhead team and they can help you.

Please mark as Best Answer if above information was helpful.

Thanks,
Matt SuellentropMatt Suellentrop
UGHHHH I spent most of the day working on that, I did log a case with Trailhead. 
Anya GardnerAnya Gardner
Yes, you can build a new playground org and it should work; but, if you do not want to do so, I recommend contacting the trailhead support staff for assistance.
Regards:
http://www.cygnusmarketing.pk/golden-gate-city/
Thanks,
Anya GardnerAnya Gardner
Yes, you can build a new playground org and it should work; but, if you do not want to do so, I recommend contacting the trailhead support staff for assistance (http://www.cygnusmarketing.pk/golden-gate-city/).
Regards:
http://www.cygnusmarketing.pk/golden-gate-city/
Thanks,
Scarlett LaylaScarlett Layla
Hi, It not a big issue you have to creat a new playground. Sometime you will have to create new playground regularly when the system don't pitch you ip. As for fb messenger mod apk (https://freezapk.com/messenger-mod-apk/) we regularly making the new playgrounds and doing our task continue. Because still we don't have found the actuall reason of the issue and the solution of the issue.