# Validate input message in UI node

**URL:** <https://discourse.nodered.org/t/validate-input-message-in-ui-node/11393>\
**Category:** Developing Nodes\
**Created:** [21 May 2019 21:13 UTC](https://discourse.nodered.org/t/validate-input-message-in-ui-node/11393 "2019-05-21T21:13:22Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [22 May 2019 18:57 UTC](https://discourse.nodered.org/t/validate-input-message-in-ui-node/11393/5 "2019-05-22T18:57:45Z")

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Apologies - yes I was thinking of beforeEmit. I was hoping returning null would work - but indeed looks like it would cause more bother. We can certainly add that capability but obviously the level of dashboard required cannot be assumed by your node. (for a while)

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