Checking GR (migo) for existing IR (miro)

Hi,

I need to populate report to display goods receipt amount (mseg-dmbtr) if an invoice does not exist

for the corresponding INVOICE Receipt. This is my relation:

MSEG-MBLNR = MKPF-MBLNR;

MSEG-MJAHR = MKPF-MJAHR.  ( i extract dbmtr from mseg)

RBKP-BELNR = MSEG-MBLNR;

RBKP-GJAHR =MSEG-MJAHR;

Now using this relation, i should be able to check if an IR exists for a particular GR.

Now i am not getting MSEG-MBLNR and MSEG-MJAHR for existing RBKP-BELNR and RBKP-GJAHR.

But when i check the entry in ME23N, GR and IR are displayed for that PO..

im checking where they are storing the data in migo in real time, but mean while, im posting the doubt too..

Thankyou.