def enrollment_identity(self, enrollment_identity):
        """
        Sets the enrollment_identity of this EnrollmentId.
        Enrollment identity.

        :param enrollment_identity: The enrollment_identity of this EnrollmentId.
        :type: str
        """
        if enrollment_identity is None:
            raise ValueError("Invalid value for `enrollment_identity`, must not be `None`")
        if enrollment_identity is not None and not re.search('^A-[A-Za-z0-9:]{95}$', enrollment_identity):
            raise ValueError("Invalid value for `enrollment_identity`, must be a follow pattern or equal to `/^A-[A-Za-z0-9:]{95}$/`")

        self._enrollment_identity = enrollment_identity