How to get response numbers from RFx Number

Hi experts,

I have a requirement in which I need to get the bid response numbers from RFx numbers.

I am getting the RFX numbers from CRMD_ORDERADM_H table by passing OBJECT_TYPE = 'BUS2200'.

From this RFX number how will I get the bid responses?

To get that which table I should hit and what are the parameters?

Thanks,

Pradeep.