To check the results of a Data Mask, look at the contents of your Database to make sure the Table values that you expect to be masked have been masked.
Example Masked SQL Database for Country Table:
You can additionally check the Log File and Mask Report at this stage (in C:\VIPTDM\SubsetCloneAndMaskRun\Mask\SQLServer\Output folder), to check that the Mask Actions have performed correctly.
If things are still not as you expect them to be, please get in touch with your account manager or email Curiosity email@example.com
TEST DATA AUTOMATION DATA MASKING VIP SERVER