You can select multiple transformation configuration files and validate them simultaneously.
During the validation process, the transformation service attempts to open the transformation source and target, which might impact performance if the source or target model is not open or if the source model is large.
To validate transformation configurations automatically, enable the transformation configuration validation preference: Click ; then select the Validate transformation configurations when you open or update them check box. Each time you open or update a transformation configuration, the transformation service validates it.