ORG UNIT to Purchasing group

Dear Experts,

Please help on the following issue

We are unable to fetch the function details from PPOSA_BBP t-code.

for example we have an orgunit  say '00000002' and for them in the details section under Functions tab we need to read the Local purchasing group and ID.

I have also attached the screen shot like which data we are trying to read in our BADI.

Please let us know any function module or DB to get the required associated values