Voucher creation for partial amount - Why is DMAAI 4330 invoked?

Hi Group Members,

Let me illustrate the scenario

Purchase Order value = $2500

Purchase Receipt value = $2500 ( OV document is created and posted to G/L)

Supplier has submitted the supplier invoice only for $1500 as per the terms of contract. Supplier will submit next invoice for $1000 30 days after the first invoice is submitted

We used P4314 to create a voucher for $1500. We have updated "Process" tab of Processing Option to allow manual update of Quantity and value.

An outcome

Debit RNV $ 1500

Debit Voucher Variance $1000

Credit Accounts Payable $2500

Observation : P4314 has treated the difference between RNV of $2500 and the supplier invoice of $1500 being matched as Voucher Variance.