[chrisplough]

Moshe,

I would refer back to your VPD Policies, as the error indicates that you are either trying to change the very column that a table is restricted on, or that you are trying to insert a row that will not satisfy the viewing policy.

This also explains why it works as DBA.ADMIN (i.e. no VPD restrictions) and not as the user that you're logged in as.

Thanks,
Chris