3672008 - Error: "Amount being adjusted against advance payment must be a positive number" appears in Invoice Reconciliation(IR)

When posting a line-item credit memo against an invoice that was previously adjusted for an advance payment, the following error appears: "Amount being adjusted against advance payment must be a positive number" on adding a negative integer to Amount to be Adjusted field under Adjusted Advance Payment.

The Adjusted Amount is not released back to the Available Advance Payment on the associated Purchase Order (PO).

SAP Ariba Buying and Invoicing

Unable to submit credit memo, advance payment adjustments , KBA , BNS-ARI-INV-CM , Credit/Debit Memos , BNS-ARI-INV-IR , Invoice Reconciliation , BNS-ARI-INV-PO-APMT , Advanced Payments , Problem