# I get this error when trying to install ROBB smarrt for z-wave any ideas?

**URL:** <https://community.homey.app/t/i-get-this-error-when-trying-to-install-robb-smarrt-for-z-wave-any-ideas/13023>\
**Category:** Questions & Help\
**Created:** [May 11, 2019, 6:49pm UTC](https://community.homey.app/t/i-get-this-error-when-trying-to-install-robb-smarrt-for-z-wave-any-ideas/13023 "2019-05-11T18:49:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lars\_Adiels](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/lars_adiels/32/10603_2.png) [@lars\_Adiels](https://community.homey.app/u/lars_Adiels)\
**Post date:** [May 11, 2019, 6:49pm UTC](https://community.homey.app/t/i-get-this-error-when-trying-to-install-robb-smarrt-for-z-wave-any-ideas/13023/1 "2019-05-11T18:49:44Z")

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ivalid id in app.json. Allowed characters  
abcdefghijklmnopqrstuvwxyz0123456789

repeated several times

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**Author:** ![Dijker](https://avatars.discourse-cdn.com/v4/letter/d/b9bd4f/32.png) [@Dijker](https://community.homey.app/u/Dijker)\
**Post date:** [May 11, 2019, 7:44pm UTC](https://community.homey.app/t/i-get-this-error-when-trying-to-install-robb-smarrt-for-z-wave-any-ideas/13023/2 "2019-05-11T19:44:00Z")

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I just installed it and that worked…