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Sanne Kjær Sørensen 13Sanne Kjær Sørensen 13 

error on trailkead??

Hi -
Maybe someone can help me?
error from Trailhead:
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: VMIMIRRF

The unit  Customize Compact Layouts
https://trailhead.salesforce.com/trails/force_com_admin_beginner/modules/salesforce1_mobile_app/units/salesforce1_mobile_app_compact_layouts?trailmix_creator_id=005500000061vGUAAY&trailmix_id=salesforce-admin-certification

in Salesforce Mobil App Customization https://trailhead.salesforce.com/trails/force_com_admin_beginner/modules/salesforce1_mobile_app?trailmix_creator_id=005500000061vGUAAY&trailmix_id=salesforce-admin-certification
is having an Error. I have been working with my dev org all them time and this is the first time I got an error.
Thanks in advance

 
NagendraNagendra (Salesforce Developers) 
Hi Sanne,

Sorry for this issue you are encountering.

May I request you please confirm if you are using a brand new developer org in order to validate this challenge, if not then I would suggest you create a brand new org and give a try which should probably do the trick.

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 any further help is needed.

Kindly mark this as solved if the reply was helpful.

Thanks,
Nagendra
Sanne Kjær Sørensen 3Sanne Kjær Sørensen 3
Dear Nagendra
Thanks for the fast reply.
Yes, I still got the error om my user sansor74@gmail.com (mailto:sansor74@gmail.com)
It is not an old dev org (what is old)
My Account object has the label Client, so I just reset the Account object I menu Rename Tabs and Labels
I took a lot of traibhaed with no problems. I guess I need to create a nother one.
 
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: MMIYUVIT
 
 
Sanne Kjær Sørensen 3Sanne Kjær Sørensen 3
why is it not poissible to use a Sandbox
Sanne Kjær Sørensen 3Sanne Kjær Sørensen 3
Thanks for the help, I created a playgraound and did this 1 united and did the config once more - at it is working. I do not understand why it is not working with the compact mobile layout. Thanks for your help