i just need to get the back end pf custom field and how can we find that in jira instance
Hi @Aniket Sawant and welcome to the community.
Can you elaborate a bit on your question? The information you provide is very limited so it might be hard to find what you need.
If you are looking for the customfield id of a field you can always go to your "custom fields" section, open the field you need and view the id in the url bar.
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