BPA Upload Custom Program

We need to create a program that will allow the user to

1) upload quotations from another system to Oracle -- this program is done

2) create BPAs from the loaded quotations -- this, in effect, will automate the 'Copy Document' process.  Instead of user copying the Quotation to a BPA, the program will create the BPA based on the quotations loaded in item 1.

Is this possible?  If so, can you give the fields that we need to populate in both PO_HEADERS_ALL and PO_LINES_ALL?

Would appreciate your help.

Thanks,

Anna