What you owe — supplier bills.
A draft has no effect on the books
A draft bill is only a note. Until it is opened it posts nothing and appears in no report.
Opening it is what brings the liability onto the books: the expense is debited and accounts payable credited.
Paying reduces the liability, not the expense
Recording a payment takes the amount off accounts payable and out of the bank account. The expense was recorded when the bill was opened.
That is what makes partial payment possible: the bill stays partially paid until it is settled in full.
Voiding is refused once paid
A draft bill can simply be voided. An open bill can be voided too, and its liability entry is reversed.
But as soon as any payment is recorded against it, voiding is refused — real money left the account, and erasing the liability would leave that payment with nothing to belong to.
The supplier is a dimension
Each bill is linked to its supplier through an analytic dimension, not through a separate ledger account per supplier. Balances per supplier come from that axis.