Hello @Prathipa R
Welcome to the Atlassian community.
We are a user community. We don't have any access to your environment and so cannot directly investigate your issue.
We can advise you about the possible root cause if you answer a few questions. Or you can bypass getting our advice and report your issue to the technical support team in your company (or the company that is providing the Jira instance for your use).
What happens when you try to move the item to the delivery request state? Do you get an error message? Or is that state not available to you to select?
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