inbound action error

[ServNowDev]

Getting the following error below and not sure where its coming from :

Action : did not create or update sys_data_source using current

(function runAction( /*GlideRecord*/ current, /*GlideRecord*/ event, /*EmailWrapper*/ email, /*ScopedEmailLogger*/ logger, /*EmailClassifier*/ classifier) {

    // Implement email action here
    var email = email;

    if (email.hasAttachments()) {
        var attachments = email.getAttachments();
        for (var i = 0; i < attachments.size(); i++) {
            var attachment = attachments.get(i);

            if (attachment.getFileName()) {
                var dataSourceRecord = new GlideRecord('sys_data_source');
                if (dataSourceRecord.get('unique_identifier', 'sys_id_ofmydatasource')) {
					var attachmentRecord = new GlideSysAttachment();
					attachmentRecord.write(dataSourceRecord, attachment.getFileName(), attachment.getContentStream());

					gs.log('Attachment' + attachment.getFileName() + 'copied to data source' + dataSourceRecord.getUniqueValue());

                }
            }
        }
    }

})(current, event, email, logger, classifier);