Checks the settings info.

        :param settings: Dict with settings data
        :type settings: dict

        :returns: Errors found on the settings data
        :rtype: list

def check_settings(self, settings):
        """
        Checks the settings info.

        :param settings: Dict with settings data
        :type settings: dict

        :returns: Errors found on the settings data
        :rtype: list
        """
        assert isinstance(settings, dict)

        errors = []
        if not isinstance(settings, dict) or len(settings) == 0:
            errors.append('invalid_syntax')
        else:
            if not self.__sp_validation_only:
                errors += self.check_idp_settings(settings)
            sp_errors = self.check_sp_settings(settings)
            errors += sp_errors

        return errors