Problem adding artifacts to Rational Asset Manager asset using REST

What URL do you use for posting? And what Content-Type, OSLC-Core-Version, and Accept headers do you send in on the post?

Oh, they were added initiallly. Url: <server>/ram/oslc/assets/57C75409-0931-FA0C-64DC-0A717B313B6B/1.0/artifacts  The guid being the asset id. Content-Type: Application/rdf, OSLC-Core-Version: 2.0, and Accept headers: Application/xml 

Did you post exactly what you showed in the question? The reason I ask is because

<a href='http://help.example.com" '="">http://help.example.com

is not a valid rdf:resource. That would be an rdf:resource reference to an HTML Anchor statement, not a URL.

You should have just rdf:resource="http://help.example.com".  That would be a valid rdf:resource reference to a URL.

Sorry I missed the remove links, this is the actual post.

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:oslc_asset="http://open-services.net/ns/artifact#">;
   <oslc_asset:Artifact>   
      <rdf:type rdf:resource="http://open-services.net/ns/asset#Artifact"/>;
      <dcterms:title>Build help documentation</dcterms:title>
      <dcterms:label>documentation</dcterms:label>
      <oslc_asset:content rdf:resource="http://help.example.com"/>;
      <dcterms:format>text/html</dcterms:format>
   </oslc_asset:Artifact>
</rdf:RDF>

And without trailing semicolons.