Thank you for looking in to this.
No changes made on the appliance as such and no bulk addition of target accounts.
This looks to be same issue like we had after upgrade of PAM to 3.3 old case #20031849.
When I use cmdName=searchTargetAccount along with any "TargetApplication.type" other than Generic it works. It gives me error only when I run this against TargetApplication.type=Generic.
I have logged a new case on this with case# 32127072
Thanks and Regards,