DIA-28087
The policy expression has an unsupported (use of) operator 'string'.
Cause
The policy expression used an unsupported operator, or used an operator in an unsupported way.
Action
Modify the policy expression to use only the supported operators in a supported way. Supported operators include "=", "!=", ">", "<", ">=", "<=", the length operators, the substring operators, and the context operators (SYS_CONTEXT and XS_SYS_CONTEXT). For a complete list of the supported operators, and the supported ways the allowed operators can be used, refer to the section on data redaction policy expressions in the Oracle documentation.