BSP Controller Class Enhancement - calling problem while execution

Hi all,
We are having a requirement in the EREC-Publication.
We have to insert 2 Droop-down fields on screen providing the F4 help for them.
BSP is modified to add the required fields.
Also, the Controller class methods are enhanced so that the given F4 list table is populated.
Here the issue is, when we call the BSP application a fresh and go to the required page, F4 help gets populated and the list is displayed. This means that the Enhancement is also being called. - Confirmed after inserting a break-point.
Then if i navigate to "Previous page" or "Initial page" using the link that is generated by the SAP Standard. Then when i come back to the same page again. the Enhancement for filling the F4 help list is not called and as a result the F4 help remains empty...
Is there any solution for the same i am not able to figure out what is exactly going wrong?
Thanks and Regards,
Kunjal Patel

Hi Sharmila,
The BSP Application in concern is a SAP Standard and hence, we need to enhance the same.
What you say is correct that we need to do it in the DoInit method. However, as far as possible Modification of SAP Standard code should be avoided. For the same, we have used the Implicit Enhancement point to enhance the required Method of the class.
This Enhancement is not called every time the class method is called. Hence, the worry.
Any suggestions?
Thanks and Regards,
Kunjal Patel

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