Subject synchronized with thesaurus

[Rousset Miled]

Hello,
Is it possible to syncronize subjects with an external thesaurus (via REST webservices)?
I looked into the topics managed in Zotero, there is just the keyword, but no identifier.
Thank you for your answers.
cordially     

here is an example in Zotero:

        <dc:subject>
           <z:AutomaticTag><rdf:value>Greece</rdf:value></z:AutomaticTag>
        </dc:subject>
        <dc:subject>
            <z:AutomaticTag>
               <rdf:value>Peinture de vases</rdf:value>
            </z:AutomaticTag>
        </dc:subject>
        <dc:subject>
            <z:AutomaticTag>
               <rdf:value>Sculpture grecque</rdf:value>
            </z:AutomaticTag>
        </dc:subject>


It would be perfect to have :

        <dc:subject>
           <z:AutomaticTag>
               <rdf:value>Greece</rdf:value>
           </z:AutomaticTag>
           <z:identifier>
              <rdf:identifier>3Kld4</rdf:identifier>
           <z:identifier>
        </dc:subject>
        <dc:subject>
            <z:AutomaticTag>
               <rdf:value>Peinture de vases</rdf:value>
            </z:AutomaticTag>
           <z:identifier>
              <rdf:identifier>3Kld5</rdf:identifier>
           <z:identifier>
        </dc:subject>
        <dc:subject>
            <z:AutomaticTag>
               <rdf:value>Sculpture grecque</rdf:value>
            </z:AutomaticTag>
           <z:identifier>
              <rdf:identifier>3Kld6</rdf:identifier>
           <z:identifier>
        </dc:subject>