Anybody know the solutions to solve "This form is currently inactive" in App Designer. We're trying to costomize form for Dynamic 365 in PowerApp. when we're going to App Designer for Case (Dynamics 365) we saw the status "This form is currently inactive".
Could you please share a bit more about your issue?
Do you want to create a Model-Driven app based on your Case Entity using PowerApps?
Which PowerApps license does your sign in account own?
Based on the issue that you mentioned, I think this issue may be related to the PowerApps license your sign in account own.
The Case Entity is an Restricted Entity in CDS within PowerApps, which has a Dynamics 365 licensing requirements for your sign in account.
If you want to create, update, or delete records within the Restricted entities using a Model-Driven app, your sign in account needs to own associated Dynamics 365 License.
Note: Actually, the Dynamics 365 Entities is based on the corresponding CDS Entities. The Entities in your Dynamics 365 would also be existed within the corresponding CDS your Dynamics 365 instance related to. Your Dynamics 365 instance is actually a PowerApps Environment.
More details about the Restricted Entity within CDS, please check the following article: