Startup error in Java Web Tomcat 7 Container in PersistenceDataSourceFactory

Hi,
I tried to deploy a webapp in the Java Web Tomcat 7 container in my trial account. In my web.xml I have the following resource-ref:
<resource-ref>
<res-ref-name>jdbc/ccocs</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
</resource-ref>
When I start the container, I get the following error in the log: #+00#ERROR#com.sap.cloud.runtime.kotyo.persistence.client.PersistenceDataSourceFactory##anonymous#localhost-startStop-1##dXXXXXXtrial#cs2#web##An exception occurred during rest communication with local config service: java.io.FileNotFoundException: http://localhost:20002/config/v1/services/persistence/jdbc/ccocs
What could be the reason for that error?
Regards
Marco

Sorry my fault. After some try and error I realised I named the DataSource in the binding "ccocs", but it has to be "jdbc/ccocs".

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