FI - MIRO Link Doubt

Dear All,

I am an ABAPer. I am developing a report for one of my client.. i am having a doubt. i will explain my scenarion... i had created a Service PO(For Service Tax) with three line items. I had done a service entry sheet against that PO.. after that i had done a MIRO for against this service entry sheet(for whole three line item each line item is having three duty component ). after doing the MIRO, the FI entries will be generated. i could see these FI entries in BKPF and BSIS table(because i am looking for only specific FI entry that his the particular GL)... here my doubt is... how can i know the link of that particular Line item to the corresponding entry in

MIGO. Plz any one help me... if you could help me with the tables and fields it would be more help ful to me