Which long field type should be used for document ids? LongPointField does not work and TrieLongField ist deprecated.

[Marc]

Hi there,

I'm struggeling with a LongPointField that I would like to use fir a 
document ID value:

  <fieldType name="long_dv" class="solr.LongPointField" docValues="true" 
/>
  <field name="id" type="long_dv" indexed="true" stored="true" 
docValues="true" required="true" />
  <uniqueKey>id</uniqueKey>


Trying to create a core with this I only get this error:

  Error CREATEing SolrCore 'test': Unable to create core [test] Caused 
by: uniqueKey field (id) can not be configured to use a Points based 
FieldType: long


The core creation immediately works fine when I change the fieldType 
line above to:

  <fieldType name="long_dv" class="solr.TrieLongField" docValues="true" 
/>


But the reference guide (cf. 
https://solr.apache.org/guide/solr/latest/indexing-guide/field-types-included-with-solr.html) 
says:

  TrieLongField: Use LongPointField instead.


So my question is: How can I use a document ID of type long in Solr 9.8 
without either running into an error or using a deprecated long type?


Any help would be appreciated.

Thanks,
Marc