ABAP proxy web service authentication

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Hi,

We are trying to develop an ABAP proxy for a web service call on ECC6 (SP14).

The web service (provided by another SAP system) uses basic authentication. The proxy has been created as has the logical endpoint/service (via SOAMANAGER). In the endpoint I have provided the credentials for authentication.

Manually testing the proxy via SE80 works fine.

When I try and call the proxy via a program it prompts for user id/password. If provided the call works.

-

DATA: ZPROXY type REF TO ZMY_PROXY,

INPUT type ZMY_PROXY_REQUEST,

OUTPUT type ZMY_PROXY_RESPONSE.

TRY.

CREATE OBJECT ZPROXY.

CATCH CX_AI_SYSTEM_FAULT.

ENDTRY.

TRY.

CALL METHOD ZPROXY->LIST_USERS

EXPORTING

INPUT = INPUT

IMPORTING

OUTPUT = OUTPUT.

CATCH CX_AI_SYSTEM_FAULT .

CATCH CX_AI_APPLICATION_FAULT .

ENDTRY.

-

My expectation is that the proxy would derive the credentials from the logical endpoint.

Am I missing something?

Thanks in advance.