Error generating WSDL from Configuration (Define Web Service)

Hi everybody,

I am trying to generate a WSDL file by "Define Web Service" option but I get the error :

com.sap.aii.util.xml.api.TransformationException:

ClientServerException exception:Unable to read object "Message Interface ZYWWLF001_OUT | www.company.com.br/ZYWWCO001" (Object Message Interface ZYWWLF001_OUT | www.company.com.br/ZYWWCO001 not found)

com.sap.aii.util.xml.api.TransformationException: Unable to read object "Message Interface ZYWWLF001_OUT | www.company.com.br/ZYWWCO001" (Object Message Interface ZYWWLF001_OUT | www.company.com.br/ZYWWCO001 not found)

at com.sap.aii.ibrep.server.transformation.MetaModell2WSDL.read(MetaModell2WSDL.java:559)

....

Does someone have one solution for this error ? I am using XI 2.0

Thanks,

Renato.