How to restrict character limit of a string field?

[Manikandan Subr]

Hi, Taking description field in Incident table as an example. I have set the Max length of description field to 4000 characters. But when i update this field through a script( i am not sure if the same happens when i update manually), i can even update 50000 characters. I dont want this to happen. Irrespective of the method of update, this description field should not take more than 4000 characters.

How do i add this restriction on the description field. 

[asifnoor · Accepted solution]

Hi,

Refer to these links. This gave an explanation of why certain fields it allows more than max length.

https://hi.service-now.com/kb_view.do?sysparm_article=KB0685779

https://www.servicenowguru.com/scripting/client-scripts-scripting/maximum-length-large-string-fields...

If you want to override this behavior, then you shall go with client scripts and restrict input after specified no. of chars.

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