During the schema pull operation, while importing objects from the MS SQL Server to the schema holder, the supported drivers may generate changes in the schema depending on the data type of the source field. For some data types, the drivers generate similar schemas, whereas for other data types, the schemas differ.
Note: Progress recommends creating and using the schema holder with the same driver. If a DataServer schema holder is created with a respective driver and you decide to change drivers, you must rebuild the DataServer schema holder with the new driver. Otherwise, you may get the schema mismatch error, particularly for operations involving LOB and datetime data types.