We got this error while trying to save the form which uses the PCF Control.
This was because the name of the property was changed
And the updated solution was imported, while the control on the form was still referring to the old property name.
Fix is straightforward, remove the field using that control with old property name from the form and save the change.
Hope it helps..
3 thoughts on “Fixed – Microsoft.Crm.CrmException: Property ‘x’ isn’t declared on the control manifest in Microsoft Dynamics 365”
This is really informative. however I am facing the same issue while importing the updated control in another environment. Could you help me ?
Try removing the existing old control from the form.