Once the automated validation process is completed, then Tide will either have identified no errors, and the Bordereau will reach a Review status, or will identify errors and will then change to a Review Errors status. A notification will pop up on screen of the relevant User to notify them that one of the two statuses has been reached.
If the Bordereau has reached a Review Errors status, then if you are a User of the relevant Transformation Company then you can click on the status to open the errors. You can then either resolve the errors in Tide, or delete the Bordereau and re-submit a corrected Bordereau.
The below video tutorial shows you how to resolve errors in Tide.