@Riyazuddin99 You can try running a beanshell rule from the email to get the desired CSV values which you want to print.
Please follow this article: How can we pull the Display Value of an entitlement into a custom Remediation Notification email template in certifications? - #2 by sagr0812
You can launch the rule with the plan/approvalItem as argument and you can return the string values which you want. Check the beanshell script mentioned in above link as reference.
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