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Article ID: 3988, created on Mar 5, 2008, last review on Jul 14, 2018

  • Applies to:
  • Operations Automation
  • Business Automation 7.0


An external system (Integrating External System UI with Odin Automation Control Panel) tries to create a user session in OA using one of the following links:

http://<UI IP>:8080/servlet/Sessions?event=login&user=<USERNAME>&password=<PASSWORD>\?event=login&login=<USERNAME>&password=<PASSWORD>&session_id=000001

Or via secret:

http://<UI IP>:8080/servlet/Sessions?event=login&user=<USERNAME>&secret=<PASSWORD>\?event=login&login=<USERNAME>&secret=<SECRET>&session_id=000001

but gets the following error:

403 - ERROR:javax.servlet.ServletException: Can't login


Cause 1: Since OA 7.x platform version all new users should use UPN for sing in action. Use instead of just username login:\?event=login&<SECRET>&session_id=000001

Cause 2: Customers attached to brands can login using their branded URL only. This is default behavior, but can be changed for enabling some special integration with external systems which do not operate with OA brands.


To enable login from different brands, one should add the following string:


In OA 6.0, this line should be added to the following file:


Since OA 7.0, service 'pau' is responsible for OA UI, and this line should be added in the following file:


In OA 7.1, the following file should be used:


When aforementioned modifications would be applied please restart OA UI on the OA UI host:

  1. For OA 6.0:

    /etc/init.d/pemui restart
  2. For OA 7.0 and later (please check this KB Article for additional details regarding restart of services):

    /etc/init.d/pau restart

In case UI is running on NG cluster, this modification has to be made on all nodes of the cluster.

Note: the correct way to add this line would be on a new line, without indentation, e.g.:

client.include.resources = rc.ve_backup.diskspace,, \

Note: It is not recommended to keep this parameter in /usr/local/pem/ui/WEB-INF/conf/ - this file may be overwritten during updates.

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