Payment Request Cycle Requirements

[Moataz-Atef]

Hello Experts, 

We do have a full cycle requirements for AP/ Bank Payments requests handling, instead of submitting a physical request to AP team we need to submit a request on the system with the following options: 

1. The request can be Down payments without ref, requesting to pay due invoice/s for specific vendor/s, Utilities payment , Petty cash settlements and general expense requests.
2. With the ability to attach proof documents.
3. The request shall be approved first from initiator department 2 levels.
4. Then to be reviewed by the AP team with 3 level (Verify, Audit, Approve).
5. Then bank to approve with 3 levels ( 1 for proposal & 2 for the payment Run).
6. The status of the request shall be monitored by the initiator at any stage. 
7. After submitting the payment from bank team the status to be completed with sending the bank receipt to the requester and his department. 

We are currently using S/4HANA 1909, I Manage to test multiple standard solutions (Free Form Payment Requests, Down payment request FIORI & F-47 , Payment proposal approval) non of this solutions are covering the requirements may be some of it and the remaining only available in S/4HANA 2408,2502. 

Any one can suggest how to cover this requirement? 

Thanks in advance.