Updated the error message

Author: SGSneha

articles/migrate/troubleshoot-appliance.md

@@ -90,6 +90,9 @@ An error about time synchronization indicates that the server clock might be out
 
 ## VDDK check failing during 'Set up prerequisites' on VMware appliance
 
+**Error**
+The VDDK check failed as appliance could not find the required VDDK kit installed on the appliance. This can result in failures with ongoing replication.
+
 **Remediation**
 
 1. Ensure that you have downloaded VDDK kit 6.7 and have copied its files to- **C:\Program Files\VMware\VMware Virtual Disk Development Kit** on the appliance server.