AP Matching fails for amount only POs

FSCM 9.2 PUM 27

We have created a PO for 200 dollars(amount only) and receipt for 100 dollars. And created a voucher for 100 dollars (associated PO & Receipt).

Run the AP_MATCH process(using STANDARD matching rule set) and it ended with exceptions RULE_E100 & RULE_E200 (voucher merch. amt <> PO merch. amt).

Expectation is that, as the PO is amount only there can be multiple receipts & vouchers created for same PO until cumulative total matches to PO amount and no matching exceptions.