Operation is not supported for this type of object. (Error 3251)
You were attempting to execute a method or assign a value to a property that is usually valid for the object, but is not supported in this specific instance. For example, the Edit method is generally valid for Recordset objects, but not for a snapshot-type Recordset. This error could also occur in cases where the operation is not permitted due to the type or status of the object — as when trying to use the MovePrevious method on a forward–only–type Recordset. Some operations are also not supported, depending on if you are accessing a Microsoft Access database engine or an ODBC data source.