Pop up error when attempting to add a tag:

From server log:
Tag operation failed: [#124013] Tagging Manager Error - [#124006] Tagger - Persistence Exception - While updating doc tagging data
...
[#71000] Admin Services Error : Esent Error - Esent error: JET_errOutOfLongValueIDs, Long-value ID counter has reached maximum value. (perform offline defrag to reclaim free/unused LongValueIDs) while calling JetSetColumn in function EsaEsentCursor::simplePut at line # 721
This is caused by the Esent database having run out of free LongValueIDs.
Please contact Veritas Technical support for assistance with the issue.