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Advocate I
Advocate I

Cannot create a new model driven app or create a new entity

I am trying to troubleshoot an issue with Common Data Service that came up earlier today. When I try to create a new Model-Driven I receive this error:



'CallbackRegistration' entity doesn't contain attribute with Name = 'filterexpression' and NameMapping = 'Platform'. MetadataCacheDetails: ProviderType=Dynamic


IsLoadedInStagedContext = False




I decided to try adding a simple entity and I receive an error saying:

An unknown error occurred.

Cannot read property 'toLowerCase' of undefined


If I go to a separate environment I am able to create any type of app and entities so the issue is isolated to my main environment. I have tried using other admin account and each account receives the same error. End users also are unable to save their progress in apps with a similar error saying the entity cannot be found.  Has anyone else encountered this error before? I have attached screenshot of the errors as well. 

Community Support
Community Support

Hi @EnableEnergyIT ,


Could you please clear cache and cookies in your browser and try again?

Or could you please try with another browser test it ?

Could you please check whether the entities' data is null?





Community Support Team _ Mona Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Good Morning,

I cleared the cache and cookies in my browser and I still am having the same issues as yesterday. For safe measure I started an incognito tab and used a different internet browser. Both of which did not yield any better results.  

Frequent Visitor

We are having a similar issue.  All our apps that utilize the CDS cant write data back to it.  This started on Sat 10/5.

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