FRM-93330: Fatal authentication error: User does not have proper credentials configured in Oracle I

Hi all,

in one new environment with following components:

- Forms & Reports Installation
- OAM Domain
- OHS Instance with WebGate
- OID -Instance
- MS Active Directory

we try to connect Froms with OID, but  we get the following error:
[WLS_FORMS] [ERROR] [FRM-93330] [oracle.forms.servlet] ... [userId: <anonymous>] ... [APP: formsapp#11.1.2] [FORMS_SESSION_ID: WLS_FORMS.formsapp.20] [URI: /forms/frmservlet] [SRC_CLASS: oracle.forms.servlet.FormsServlet$Request] [SRC_METHOD: doRequest] Fatal authentication error:  User does not have proper credentials configured in Oracle Internet Directory.

Is there any experince available regarding this error?

Thanks in advance,
Moh