codemeta:identifier does not allow propertyvalues (source: https://github.com/codemeta/codemeta/blob/master/codemeta.jsonld#L36 ; `"@type": "@id"` means the value must be a URI,  but propertyvalues are not URIs), so we need to replace:

 <codemeta:identifier>
   <codemeta:type>schema:PropertyValue</codemeta:type>
   <schema:propertyID>HAL-ID</schema:propertyID>
   <schema:value>hal-02527759</schema:value>
 </codemeta:identifier>

with this:

 <schema:identifier>
   <codemeta:type>schema:PropertyValue</codemeta:type>
   <schema:propertyID>HAL-ID</schema:propertyID>
   <schema:value>hal-02527759</schema:value>
 </scehma:identifier>