A control computer implements a multi-stage process to automatically repair errors in a policy using selectable, pluggable repair modules. In the first stage, the control computer identifies the errors that caused the policies to fail the validation process, and associates the errors with corresponding repair modules. The repair modules comprise information that is needed to correct or repair the errors. In the second stage, the control computer generates commands for correcting the errors based on the information in the repair modules. In a third stage, the control computer applies the commands to the policies that failed the validation process to correct the errors.