3638880 - Vendor is contained in proposal error in S/4HANA Cloud Public Edition

Encounter the following error in the "Manage Automatic Payments" app when scheduling a payment proposal.
Or when posting manual payments, such as in the "Post Outgoing Payments" or "Post Incoming Payments" app, the following error is displayed.
Error message: "Vendor & CC is contained in proposal MM/DD/YYYY XX; no editing".

SAP S/4HANA Cloud Public Edition

The same supplier or customer cannot be used in different payment proposals or manual payments simultaneously, even if the invoices selected are different.

1. Schedule the payment run for the mentioned payment proposal.
2. Or delete the mentioned payment proposal.

KBA 2727465 - Vendor & & is contained in proposal & & no editing.

Manage Automatic Payments, Payment Proposal, Manual Payments, Post Outgoing Payments, Post Incoming Payments, Clear Outgoing Payments, Clear Incoming Payments, Vendor is contained in proposal , KBA , FI-FIO-AP-2CL , Fiori UI for Accounts Payable (Public Cloud) , Problem