RE: Trial Account API client_id / secret
Hey Michael.
What are you trying to achieve? Client+Secret is usually required and generated on Azure, to create a Service Principal (an account that will be used to access resources in another app, like dynamics/powerPlatform)
on https://learn.microsoft.com/en-us/azure/active-directory/develop/howto-create-service-principal-portal#register-an-application-with-azure-ad-and-create-a-service-principal you have the information on how to do this. Follow steps
a) Register an application with AzureAD and create a service principal
b) Assign a role. ON the "Role", search for the ones associated with PowerPlatform/Dataverse
c) Set up authentication. ON this point, follow option 3 to generate a Secret. Please, remember to save the secret as once you move away, you won't be able to see it again.
d) Once this is done, go to PowerPlatform admin center, on the environment of your choise and add an Application User.... should introduce the ClientiD (APplicationID) from azure.
Again, this is for Application User (or Service Accounts). For standard users, the procedure is different.
Regards,