I know there are many posts about a missing uniqueId but in my situation, it isn’t missing.

The code I send to solr via curl is:

`http://solr.xxxxxxxxx.com:8983/solr/email/update/extract?commit=true&** *%26literal.archive_id_s%3D1690134%26literal.attachment_id_s%3D2102500%26literal.base_name_s%3D6658a301ea80b_28d248343289759_primal.mail.txt%26literal.created_at_dt%3D2024-05-30T12%3Dasxxxxxx%40xxxxxxxxxxxxxxxxxxxx.com" -F "myfile=@/email_archive/attachments/2024/5/30/6658a301ea80b_28d248343289759_primal.mail.txt"`

I’ve bolded the id field in the code above. I don’t understand why I’m getting:
. { "responseHeader":{ "status":400, "QTime":1}, "error":{ "metadata":[ "error-class","org.apache.solr.common.SolrException", "root-error-class","org.apache.solr.common.SolrException"], "msg":"Document is missing mandatory uniqueKey field: id", "code":400}}

I’d appreciate any suggestionss.
I’ve reviewed my schema.xml and see nothing of import.