Charge Account not populating for Inventory Items while creating Requisition through Rest API

Summary:

We are creating Requisition through Inbound interface using RestAPI. The charge account gets populated when Price is auto fetched for Inventory Items as per Oracle standard norms. Here is the below expectation from client 

Price Precedence ->
Firstly, Price should be updated as per BPA Price with Supplier
If not BPA Price then, List Price
If not List Price, then Payload Price

Scenario                                             Expected

With Supplier (Supplier there in Input file)

Item with BPA price and List Price - BPA Price

Item with only BPA Price - BPA Price

Item with only List Price - List Price

item with no BPA price and no List price - Error out the record from file BIP or from payload