No option to 'End' the 'Report as finished' POs

Hi Team,

I can't see an option to end my POs.

I have reported them as finished, but still the 'End' option is not showing up.

Also, there are no POs showing up under Periodic -> POs -> End.

I am not able to understand what the issue might be.

It might be a very silly question but i have recently started working with POs.

Thank you for all your help.

~ Nidhi :)