Could not establish connection to Services Registry

refer to the note:1267817

Procedure

      1.      To start SAP NetWeaver Administrator, enter the following address in a web browser:
http://<host>:<port>/nwa
      2.      Choose SOA Management -> Business Administration -> Web Services Administration.
      3.      In the Search by field select Proxy Definition Name and enter ServicesRegistrySi in the Value field.
       4.      From the result list select ServicesRegistrySi.
       5.      In the Configuration tab, select the logical port ServicesRegistrySiPort and choose Edit.
      6.      In the Details section in the URL field adjust the wsdl URL of the Services Registry to the one of the central Services Registry.

http://<host>:<port>/ServicesRegistrySiService/ServicesRegistrySiPort
It is better to use full qualified name for the <host>.
       7.      In the Security tab specify all security settings and save.
       Apply at least basic authentication (HTTP authentication).
       Select Details and enter the User ID and password.
Use a technical user for this connection.

The following roles have to be assigned to Services Registry users:
       For read access: SERVICES_REGISTRY_READ_ONLY and the UDDI role UDDI_Tier1
       For unlimited access to Services Registry content: SERVICES_REGISTRY_READ_WRITE and the UDDI role UDDI_TierN