consume mdm webservice

HI,

I deploy mdm webservice on nw7.4 via mdm wsgenerator. now i can find the webservice in ws navigator, but i got error infor after invoking.what's wrong with my operation.

error message:

connection_3005-Cannot connect with MDM using destination MDM_BANK_INFO; caused by: Can not connect with UserSessionContext to repository 'TF_BANK_ACCOUNT' on the server 'xx.xx.xx.xx'.