Hi @sai_cont23 Welcome to Atlassian Community!
It's not feasible to hide field or apply behaviour on field in JIRA Cloud.
In Jira server only you can do this using Script Runner plugin .
For JIRA cloud, you can hide value of the field, using Automation for JIRA. Check below post it might help you :-
G’day Bamboo customers, As we approach GA for Bamboo Data Center , we would like to inform you that the Data Center Apps Program for Bamboo starts this quarter. How long does it take? We are g...
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