Hello out there,
I will try to describe my problem and hopefully someone had the same problem AND a solution 
:
My system is SAP ECC 6.0, SAP_BASIS 701 (Support Package SAPKB70105), please let me know, if you need more information.
I am running a Z-Transaction as an ITS service.
Parameters in transaction SE80 are:
| ~GENERATEDYNPRO | 0 |
| ~THEME | 99 |
| ~TRANSACTION | LM01 |
The GUI settings in the SICF service are:
| ~THEME | 99 |
| ~TRANSACTION | LM01 |
| ~ITSMOBILE | 1 |
| ~ITSMOBILECUAINCLUDE | xxx_CUAAREA |
| ~ITSMOBILEJSINCLUDE | xxx_MOBILE |
| ~SOURCES | ZSM_WM_HRL_LUE,itsmobile,itsmobile00 |
| ~XSRFCHECK | 1 |
| ~OKCODE_PERMIT | ENT, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, CSF1, /0, =PB10 =PB1, /nex |
| ~POPUPS | 1 |
In addition I created an external alias with the SICF service as target element. We did so, as our authorization allows us to modify the alias settings even on the productive system, whereas we'd have to open the system to modify the SICF service itself.
What do I want to realize: If the user logs off (I did little modifications on the template and the JS File to achieve that in any case the user presses F8 or F3 on the upmost menu screen), he should be redirected to this logon page:
To achieve that I did activate "Redirect to URL" on the tab "Error Pages / Logoff Page"; as in the current release of our system there is no logoff service, I created a ZLOGOFF service as described in SAP NOTE 1980567 - Configuring a logoff service for SAP_BASIS 700 system.
When I do so and logoff from the service (for testing I use the Internet Explorer and Chrome Browser as well with identical results), at first I will NOT be redirected to the logon screen (as shown above), but there occurs a authentication popup window like this (sorry for showing this in german, I was not able to change language):
This seems to be an Windows Security Popup and the SAP WAS of our system wants to have user name an password. If I do that once, and do NOT leave the browser, the logoff behaves like expected. But as soon as I close the Browser, the first logoff gets me to that additional logon popup. Is it a matter of cookies ? I could not find anything in SCN or SAP notes. To me it seems not to be a problem of the ZLOGOFF service, but of some security setting in SAP. By the way: On other systems (other SAP release) we use also Z services with the same procedure and the standard logoff service, with no problem, thus it probably is not some local PC or windows setting.
So, Logoff and redirect seem to work in principle, it is "only" this addtional security popup which bothers me. By the way, it is no option to recommend an upgrade, as we do that in predefined projects, not by request.
Please let me know, if you need more information to help me.
Thanks in advance
Volker Bock