I have been thinking of writing this blog for quite sometime to the benefit of those who have been having troubles importing WSDLs that references xs:schema but do not have corresponding import for such entities. This causes wsimport tool to report error. Mark from portal team reported the same issue while importing Share Point services and also WSIT and other users have reported the similar problems.

So this is what happens, when wsimport is run on a WSDL that references xs:schema and does not provide a corresponding import:

wsimport  SecureConversation.wsdl

Gives the following error:

[ERROR] undefined element declaration 'xs:schema'

line 1 of 
http://131.107.72.15/Security_WsSecurity_Service_Indigo/WSSecureConversation.svc?xsd=xsd0

To fix this, you would do two things

• Run wsimport with -b option and pass the URL of XML Schema. This is to take care of missing import.
• There are potential name conflicts in schema for schema. this was discussed here at length and Kohsuke has provided a JAXB customization to resolve such conflicts.

So your wsimport command will be

wsimport -b  http://www.w3.org/2001/XMLSchema.xsd  -b  customization.xjb  SecureConversation.wsdl

You can do the same with NB 5.5.1, you would need to provide local copies of these schema and customization files. If you are facing this issue try it and let us know if you see any issue.