Ensure uniqueness for zod schema field

z.object({
            email: z // Should be unique (not same as any other participant.email)
              .string()
              .email({
                message: tParticipant("fields.email.rules.pattern"),
              })
              .min(1, {
                message: tParticipant("fields.email.rules.required"),
              }),
            name: z // Should be unique (not same as any other participant.name)
              .string()
              .min(1, { message: tParticipant("fields.name.rules.required") })
          })
          .array()