# NAT7734 mapping Natural 9.1.1 NDV under NSC **URL:** \ **Category:** Forum\ **Tags:** Adabas-Natural, Natural, Natural-on-Linux, Natural-on-Windows-Unix\ **Created:** [January 28, 2019, 10:05am UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582 "2019-01-28T10:05:01Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Thomas\_Schwade](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/thomas_schwade/32/131_2.png) [@Thomas\_Schwade](https://techcommunity.softwareag.com/u/Thomas_Schwade)\ **Post date:** [January 28, 2019, 10:05am UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/1 "2019-01-28T10:05:01Z")
Did anyone also encounter the error message “LOGON 000 NAT7734 System command cannot be executed when Web I/O is active.” when mapping to a Natural 9.1.1 Development Server running under Natural Security on Windows? I see this error when mapping to that server both from NaturalONE and from Natural Studio. The user is defined in Natural Security and can logon interactively to the same Natural without problem. A Natural trace of the NDV server shows that the LOGON program is executed, but yields the mentioned error. What am I doing wrong? Many thanks. ![Screenshot1.png](https://global.discourse-cdn.com/techcommunity/original/2X/3/3cfe9f8fd5e905471fc54055a788b23cd202db95.png) ---
**Author:** ![James\_Gilpin1](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/james_gilpin1/32/152_2.png) [@James\_Gilpin1](https://techcommunity.softwareag.com/u/James_Gilpin1)\ **Post date:** [January 28, 2019, 2:42pm UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/2 "2019-01-28T14:42:42Z")
Are you passing additional parameters to the NDV server from the client? ---
**Author:** ![Thomas\_Schwade](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/thomas_schwade/32/131_2.png) [@Thomas\_Schwade](https://techcommunity.softwareag.com/u/Thomas_Schwade)\ **Post date:** [January 28, 2019, 4:04pm UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/3 "2019-01-28T16:04:24Z")
In this case no, but passing parameters did not make a difference. ---
**Author:** ![Douglas\_Kelly](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/douglas_kelly/32/102_2.png) [@Douglas\_Kelly](https://techcommunity.softwareag.com/u/Douglas_Kelly)\ **Post date:** [January 29, 2019, 2:41am UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/4 "2019-01-29T02:41:58Z")
is there any STACK in the NATPARM being used? ---
**Author:** ![Thomas\_Schwade](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/thomas_schwade/32/131_2.png) [@Thomas\_Schwade](https://techcommunity.softwareag.com/u/Thomas_Schwade)\ **Post date:** [January 29, 2019, 9:32am UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/5 "2019-01-29T09:32:58Z")
No, it is simply the default parameter module that was created during installation, which contains an empty STACK parameter. It is a freshly installed NAT/NSC/NDV, including the required post installation tasks and the creation of an additional user (who can logon interactively to Natural without problems). My impression is that for some reason (misconfiguration?) the LOGON fails and tries to pop up the LOGON dialog, which is not possible under Web I/O and raises the error message NAT7734. I see the LOGON program running in the Natural trace, but no evidence why it fails. ---
**Author:** ![Finn\_the\_Dane1](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/finn_the_dane1/32/132_2.png) [@Finn\_the\_Dane1](https://techcommunity.softwareag.com/u/Finn_the_Dane1)\ **Post date:** [January 29, 2019, 9:39am UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/6 "2019-01-29T09:39:35Z")
Hi Thomas just a wild guess… Is there a “menu=on” for the library ? Finn ---
**Author:** ![Thomas\_Schwade](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/thomas_schwade/32/131_2.png) [@Thomas\_Schwade](https://techcommunity.softwareag.com/u/Thomas_Schwade)\ **Post date:** [January 29, 2019, 9:52am UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/7 "2019-01-29T09:52:35Z")
No, Finn, there is nothing special defined for the private library of the user, just the default settings. ---
**Author:** ![James\_Gilpin1](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/james_gilpin1/32/152_2.png) [@James\_Gilpin1](https://techcommunity.softwareag.com/u/James_Gilpin1)\ **Post date:** [January 29, 2019, 10:27pm UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/8 "2019-01-29T22:27:37Z")
Do the NDV session require a startup script? On Linux, we had to setup a shell script the invoked the setup environment variables, etc. Not sure about Windows… but if you are hitting a startup script, you might have a command in the script that was not expected. Something that require input/output (error message with a Y continue prompt)… ---
**Author:** ![Thomas\_Schwade](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/thomas_schwade/32/131_2.png) [@Thomas\_Schwade](https://techcommunity.softwareag.com/u/Thomas_Schwade)\ **Post date:** [January 30, 2019, 9:09am UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/9 "2019-01-30T09:09:57Z")
Many thanks for the hint, I’ll check this, but don’t have much hope. I have up set NAT/NDV/NSC successfully on many earlier versions of Natural on Windows and never had to deal with a startup script. Nevertheless, I followed the installation and post-installation docs step by step also this time, double checked the docs and don’t seem to have missed something. Strange. ---
**Author:** ![Douglas\_Kelly](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/douglas_kelly/32/102_2.png) [@Douglas\_Kelly](https://techcommunity.softwareag.com/u/Douglas_Kelly)\ **Post date:** [January 30, 2019, 9:15pm UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/10 "2019-01-30T21:15:49Z")
I did find this note in the documentation: [https://techcommunity.softwareag.com/ecosystem/documentation/natural/nat911win/webio/webio-intro.htm#webio-intro-restrictions](https://techcommunity.softwareag.com/ecosystem/documentation/natural/nat911win/webio/webio-intro.htm#webio-intro-restrictions) > [@](#): > > You must not use any Natural system command such as CATALL, FIND, GLOBALS, HELP, KEY, LIST, RETURN, SCAN, SETUP or XREF as this leads to wrong screen display and a loss of the session. HTH ---
**Author:** ![Thomas\_Schwade](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/thomas_schwade/32/131_2.png) [@Thomas\_Schwade](https://techcommunity.softwareag.com/u/Thomas_Schwade)\ **Post date:** [January 31, 2019, 9:33am UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/11 "2019-01-31T09:33:53Z")
Thanks for all these hints. Unfortunately none of these cases seems to apply, since a full Natural trace of the NDV server session shows that nothing but the LOGON program is executed, and this yields the NAT7734 error. So it might in fact be rather a support issue. ---
**Author:** ![system](https://global.discourse-cdn.com/techcommunity/original/3X/c/d/cd19967bb605d28a72d77eb83a1cae22f3df2eb8.svg) [@system](https://techcommunity.softwareag.com/u/system)\ **Post date:** [April 2, 2021, 3:42pm UTC](https://techcommunity.softwareag.com/t/nat7734-mapping-natural-9-1-1-ndv-under-nsc/202582/12 "2021-04-02T15:42:12Z")