Possible wrong data type definition for the dynamicField "*_t" in solr7

[shahmanash]

Possibly , wrong data type definition for the dynamicField "*_t" causes the following error leading to failed loading of biocache core in solr7

https://github.com/AtlasOfLivingAustralia/ala-install/blob/master/ansible/roles/solrcloud_config/templates/biocache_schema_docvalues.xml#L877

<dynamicField name="*_t" type="text" indexed="true" stored="true" docValues="true"/>

null:org.apache.solr.core.SolrCoreInitializationException: SolrCore 'biocache' is not available due to init failure: 
Could not load conf for core biocache: Can't load schema /opt/solr/server/solr/mycores/biocache/conf/schema.xml: 
Field type text{class=org.apache.solr.schema.TextField,​analyzer=org.apache.solr.analysis.TokenizerChain,​args={positionIncrementGap=100,​ class=solr.TextField}} does not support doc values

When the field type is changed to string , the loading of core does not show previous error

<dynamicField name="*_t" type="string" indexed="true" stored="true" docValues="true"/>

Should the field be changed to string or should it remain as text and the problem addressed in a different way ?