I found a knowledge base (KB) that relates to you question,
Changes in Error Codes as of NI-CAN version 1.5. The best way to find knowledge bases (KB) is to goto ni.com >> Support >> Advanced Search (option 3) >> type in the keywords and you will get them. As a first source of trouble shooting and reference, I would suggest looking through the following resources:
ni.com > NI Developer Zone > Development Library
http://search.ni.com/?col=alldocs&layout=TechResources&ql=a , to search examples and knowledge bases
http://ni.com/support/