As per the patch updates, we tried to mask the BLOB column using REGEXPREPLACE function,
From logs, we got a successful message, but it not getting masked in actual column.
Release : 4.10
Patch is provided by engineering team for this issue. Download and install the latest patch from TDM patches link
https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/release-announcements/Test-Data-Manager-TDM-Patches/16649