如何访问单个客户端的openbravo XML / Rest API？

When I'm trying access the rest/xml api it is asking for the username and password, the default username and password is 'Openbravo' and 'openbravo' respectively. But I have a created a client with in the openbravo and organisations related to that client. so, for this also I need to give the default username and password what what if I want to access the organisation details based on the client because I cannot find the organisation details from the default username and password. Please help me fix it.When I'm trying access the rest/xml api it is a