FAGLF101

Hi. I would like an explanation about the t-code FAGLF101. Basically I understand how it works, but I am a little bit confused. I am trying to reclasify my Accounts Payable, however I am not getting the results I expect. An example, I have a vendor to whom I have to pay in 2 years. Is it possible to reclasify through FAGLF101? Because when I execute the t-code, it remains in the same level like others vendors which items are alredy due.

Thanks in advance.