>From the reference guide:

Field names should consist of alphanumeric or underscore characters
only and not start with a digit. This is not currently strictly
enforced, but other field names will not have first class support from
all components and back compatibility is not guaranteed.


On Fri, Feb 2, 2018 at 1:07 AM, Emir Arnautović
<emir.arnauto...@sematext.com> wrote:
> Hi Wendy,
> A bit off-topic, but forgot to mention in previous mail: dots in field names 
> are not recommended. Even it obviously works for you, I think I’ve seen 
> people reporting some issues caused by dot in field names (I cannot find some 
> reference now). So, if you plan some system upgrade in the future, you might 
> want to get rid of field names with dots - you can safely use underscore.
> Regards,
> Emir
> --
> Monitoring - Log Management - Alerting - Anomaly Detection
> Solr & Elasticsearch Consulting Support Training - http://sematext.com/
>> On 1 Feb 2018, at 17:19, Wendy2 <wendy....@rcsb.org> wrote:
>> And the coupon has no expiration date on it (LOL).  Thank you again, Emir!
>> Best Regards,
>> Wendy
>> --
>> Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html

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