ERROR:unknown field '..'

Question

Hello, qorking on Solr, I get this error:

 ERROR:unknown field 'name'

But I have defined this field in my schema.xml :

<field name="name" type="string" indexed="false" stored="true" required="true" elementForm="INPUTHIDDEN" />

I get this error when I try to add the field to the documment which is going to be commited:

doc.addField("name", getName());
solrClient.addDocument(doc);

Any ideas?? Thanks in advance