Need F5 iRules Consultant - HTTP Header Manipulation Issues

Need more details to execute it or you can work with with F5 PS. Or These are the most common traps when modifying headers dynamically:

Repeated header modification inside the same event.
If you HTTP::header replace inside an event that triggers again (e.g., because of HTTP::redirect or HTTP::retry), it can loop.

Nested or unintended HTTP::collect usage.
Collecting payload multiple times or in the wrong event (like calling HTTP::collect inside HTTP_REQUEST_DATA without checking HTTP::is_collected).