# NAT can't find external subprogram after Natural upgrade

**URL:** <https://techcommunity.softwareag.com/t/nat-cant-find-external-subprogram-after-natural-upgrade/79101>\
**Category:** Forum\
**Tags:** Mainframe-Integration, EntireX\
**Created:** [September 24, 2008, 1:10am UTC](https://techcommunity.softwareag.com/t/nat-cant-find-external-subprogram-after-natural-upgrade/79101 "2008-09-24T01:10:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![cwebb](https://avatars.discourse-cdn.com/v4/letter/c/8e8cbc/32.png) [@cwebb](https://techcommunity.softwareag.com/u/cwebb)\
**Post date:** [September 24, 2008, 1:10am UTC](https://techcommunity.softwareag.com/t/nat-cant-find-external-subprogram-after-natural-upgrade/79101/1 "2008-09-24T01:10:48Z")

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Hello-  
We were successfully calling an external web service from Natural 3.1.5 but when we went to version 4.1.4 SP8 of Natural we now get a 6972 R4 (No server found in service directory for the subprogram/library whose names are indicated in the error message) or a 6971 R1 (no Transport layer) error. No changes were made to the Natural code or to the javaxmlrpcserver artifacts.

We are using EXX 7.2.1.82 with NATRPC version 5.1.1.3 and SYSIDL 6.1.1.8

Did something change in Natural that we lost some kind of connection?  
Has anyone had this experience?

Thanks in advance,  
Chris

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**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:** [September 24, 2008, 6:23pm UTC](https://techcommunity.softwareag.com/t/nat-cant-find-external-subprogram-after-natural-upgrade/79101/2 "2008-09-24T18:23:42Z")

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Did your SYSRPC/SM entries come forward (NATCLTGS)? Are you able to PIng the Broker from SYSRPC/XC?

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**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, 2:50pm UTC](https://techcommunity.softwareag.com/t/nat-cant-find-external-subprogram-after-natural-upgrade/79101/3 "2021-04-02T14:50:56Z")

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