With November’s updates, we put measures in place to prevent errors that occur when you change a custom field's type to an incompatible type.
11/04/2020 - Custom Fields Update
11/04/2020 - Custom Fields Update
Custom fields
With this update, if a custom field is currently in use, you will only be able to change its “Field Type” to a similar type to prevent errors. For example, changing a custom field type of “Text” to “Date” will cause an error when viewing records with that custom field.