SETINTRIGONLY, ISV iiii cannot be modified outside of the trigger environment
Trigger/Run Time Error: The Intrinsic Special variable iiii can only be SET within the context of trigger logic ($ZTLEVEL > 0)
Action: Examine the application logic to determine whether code intended for use in a trigger context falls in an execution path outside of trigger logic. For code intended to execute both inside and outside triggers, use a postcondition that limits the SET to within a trigger.
