Export key attribute uniquename for component CustomAPI must start with a valid customization prefix exception while creating Custom Action in Dynamics 365

We might get below error while creating a custom action from the maker portal without specifying the prefix. Unhandled exception: Exception type: System.ServiceModel.FaultException`1[Microsoft.Xrm.Sdk.OrganizationServiceFault] Message: Export key attribute uniquename for component CustomAPI must start with a valid customization prefix As the message suggests, we need to add prefix to the Unique Name of the custom API. … Continue reading "Export key attribute uniquename for component CustomAPI must start with a valid customization prefix exception while creating Custom Action in Dynamics 365"