problem to indentify reversed GR

hi experts,

                     i want to know is there any other way to indentify reversed GR or cancel the GR which does not fill the mkpf-smbln.

in present senerio in few cases the field in MKPF Table which we use to identiy revers process ( mkpf-smbln) is not filled.

but reversel through migo insert mr no in this field(mkpf-smbln) as i know.

that show the impact in report as per my logic .

process is :-

po

migo : 101 mvt

revers through migo

kinldy help this regards,

thanks in advance.

vikas