# How to throw the error message in register function?

**URL:** <https://discourse.nodered.org/t/how-to-throw-the-error-message-in-register-function/18146>\
**Category:** Developing Nodes\
**Created:** [19 November 2019 13:02 UTC](https://discourse.nodered.org/t/how-to-throw-the-error-message-in-register-function/18146 "2019-11-19T13:02:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![matsujirushi](https://avatars.discourse-cdn.com/v4/letter/m/bc8723/32.png) [@matsujirushi](https://discourse.nodered.org/u/matsujirushi)\
**Post date:** [19 November 2019 13:02 UTC](https://discourse.nodered.org/t/how-to-throw-the-error-message-in-register-function/18146/1 "2019-11-19T13:02:34Z")

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Hi,  
How to throw the error message when error happened in register function?  
(I tried to call 'node.error(), I cannot see it on Node-RED editor.)