E.29 Rowkey does not have any primary key attributes Error

While browsing across the Resources table in the Resource Type tab the following error message is logged:

@ <Error> 
<oracle.adfinternal.view.faces.model.binding.CurrencyRowKeySet> 
@ <BEA-000000> <ADFv: Rowkey does not have any primary key attributes. Rowkey:
oracle.jbo.Key[], table: model.ResTypeVOImpl@620289.> 

This is harmless and does not hinder any functionality.