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Bharath OgetyBharath Ogety 

"AppExchange App Development" TrailHead Module ...... "Package an AppExchange App" unit ...... Plz HELP with the error.

I am trying to get through a TrailHead module "AppExchange App Development" and within the unit "Package an AppExchange App ",

I tried completing the Hands-on challenge as instructed and I am very sure that I followed every word as instructed.  I still keep getting the below error for reasons I dont understand.

Here is the error:
"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: ZMFNEVBY"


Any help is greatly appreciated! Thank you in advance.
Best Answer chosen by Bharath Ogety
NagendraNagendra (Salesforce Developers) 
Hi Bharath,


Sorry for this issue you are encountering.

May I request you please confirm if you are using a brand new developer org for validating the challenge?

If you are using a brand new developer org then please double check that your org doesn't have a namespace enabled.If that doesn't help please give a try by restarting the batch

Still, if the problem persists log out of all accounts and log in once again in a different browser by clearing the cache and cookies which should probably do the trick.

Please let us know if this helps.

Mark this as solved if it's resolved.

Thanks,
Nagendra

All Answers

NagendraNagendra (Salesforce Developers) 
Hi Bharath,


Sorry for this issue you are encountering.

May I request you please confirm if you are using a brand new developer org for validating the challenge?

If you are using a brand new developer org then please double check that your org doesn't have a namespace enabled.If that doesn't help please give a try by restarting the batch

Still, if the problem persists log out of all accounts and log in once again in a different browser by clearing the cache and cookies which should probably do the trick.

Please let us know if this helps.

Mark this as solved if it's resolved.

Thanks,
Nagendra
This was selected as the best answer
Bharath OgetyBharath Ogety
Solved.
I have a new developer org in my case and after making sure the namespace, I tried uninstalling and installed it again which did the trick.