Error appears on the validate repository tool

WARNING: This is mere guideline, we do not enforce it and it should be at your own discretion to apply/follow it. Please liaise with your DBA system administrator on this. 

Error Message:  (in French, English version is almost identical)

ERROR: Creating Table 'CW_AUDIT'...

       Creating View 'CW_AUDIT_PER_PROPERTY'...

       Creating the required audit triggers...

EXCEPTION: Running test 'Audit Compatibility: Check schema':

L'instruction ALTER TABLE a échoué parce que le déclencheur 'AUDIT_sysdiagrams'

de la table 'sysdiagrams' n'existe pas.

Symptoms:

Error appears when trying to run the validate repository tool for Casewise Suite following an upgrade. 

Resolution

To resolve this, please follow below steps

1. Make a backup of your SQL database first and inform your DBA.
2. In the SQL server management studio, please delete the dbo.sysdiagram from your Casewise database→ “Table”. Please see below screenshots.

3. Then rerun the validate repository tool as usual.