# EM9191 attach failed when IMEISV include set to 0 (during call setup)

**URL:** <https://forum.sierrawireless.com/t/em9191-attach-failed-when-imeisv-include-set-to-0-during-call-setup/30754>\
**Category:** Uncategorized\
**Created:** [September 29, 2023, 9:32pm UTC](https://forum.sierrawireless.com/t/em9191-attach-failed-when-imeisv-include-set-to-0-during-call-setup/30754 "2023-09-29T21:32:01Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![foxsexy](https://avatars.discourse-cdn.com/v4/letter/f/c77e96/32.png) [@foxsexy](https://forum.sierrawireless.com/u/foxsexy)\
**Post date:** [September 29, 2023, 9:32pm UTC](https://forum.sierrawireless.com/t/em9191-attach-failed-when-imeisv-include-set-to-0-during-call-setup/30754/1 "2023-09-29T21:32:01Z")

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Need some help:

In my 5G SA core system: if I set the IMEISV-include to 0 (i.e. the NAS SecurityModeCommand has the imeisv\_req\_incl=0) , \*\*\*\* the UE attach would fail. i.e. it won’t send out the PDU\_session\_request.

Other UE (like Samsung 22) works fine on the system with this setting.

Is it a potential bugs on the chip ? Or some settting we need to set on EM9191 to allow IMEISV\_include=0 ?

Thx!!

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [September 29, 2023, 11:06pm UTC](https://forum.sierrawireless.com/t/em9191-attach-failed-when-imeisv-include-set-to-0-during-call-setup/30754/2 "2023-09-29T23:06:23Z")

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Why do you need to set that?  
How do you set this?

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<div class="post-metadata">

**Author:** ![foxsexy](https://avatars.discourse-cdn.com/v4/letter/f/c77e96/32.png) [@foxsexy](https://forum.sierrawireless.com/u/foxsexy)\
**Post date:** [September 29, 2023, 11:19pm UTC](https://forum.sierrawireless.com/t/em9191-attach-failed-when-imeisv-include-set-to-0-during-call-setup/30754/3 "2023-09-29T23:19:13Z")

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I am using a system (5G SA core) which i have not control ☹

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<div class="post-metadata">

**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [September 30, 2023, 1:41am UTC](https://forum.sierrawireless.com/t/em9191-attach-failed-when-imeisv-include-set-to-0-during-call-setup/30754/4 "2023-09-30T01:41:29Z")

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Is that the IMEISV-include is a parameter on your network side?  
Not quite sure what this parameter means