OData DeepInsert not binding correctly

[JamezG12]

Executing a DeepInsert on the ConnectedService generated client posts data to the server but doesn't bind the body to the parameter in the action.

Assemblies affected

Microsoft.AspNetCore.OData/8.2.5
Microsoft.AspnetCore.OpenApi/8.0.4
.Net 8

Reproduce steps

Issue deep insert to a POST endpoint

POST http://127.0.0.1:5282/v1/PayerAccounts HTTP/1.1
Host: 127.0.0.1:5282
OData-Version: 4.01
OData-MaxVersion: 4.01
Accept: application/json;odata.metadata=minimal
Accept-Charset: UTF-8
User-Agent: Microsoft.OData.Client/7.21.0
Connection: Keep-Alive
Content-Type: application/json;odata.metadata=minimal
Content-Length: 433

{"@type":"#OData.Api.Data.Entities.PayerAccount","ClientId":1,"Id":0,"IsDefault":true,"Reference":"console testing","PaymentSchedules":[{"AmountIncludingVat":1,"BankingReference":"ref"}]}

Expected result

The server accepts the payload and populates PayerAccount and it's PaymentSchedules.

Actual result

When the server receives the request, the body isn't bound and is null.

Additional detail

Changing the request headers from 4.01 to 4.0 causes the application to work as expected.

The following does not work, either omitting the OData-Version header or setting it to 4.0 works

POST http://127.0.0.1:5282/v1/PayerAccounts HTTP/1.1
Host: 127.0.0.1:5282
OData-Version: 4.01
OData-MaxVersion: 4.01
Accept: application/json;odata.metadata=minimal
Accept-Charset: UTF-8
User-Agent: Microsoft.OData.Client/7.21.0
Connection: Keep-Alive
Content-Type: application/json;odata.metadata=minimal
Content-Length: 433

{"@type":"#OData.Api.Data.Entities.PayerAccount","ClientId":1,"Id":0,"IsDefault":true,"Reference":"console testing","PaymentSchedules":[{"AmountIncludingVat":1,"BankingReference":"ref"}]}

This works

POST http://127.0.0.1:5282/v1/PayerAccounts HTTP/1.1
Host: 127.0.0.1:5282
OData-Version: 4.0
OData-MaxVersion: 4.01
Accept: application/json;odata.metadata=minimal
Accept-Charset: UTF-8
User-Agent: Microsoft.OData.Client/7.21.0
Connection: Keep-Alive
Content-Type: application/json;odata.metadata=minimal
Content-Length: 433

{"@type":"#OData.Api.Data.Entities.PayerAccount","ClientId":1,"Id":0,"IsDefault":true,"Reference":"console testing","PaymentSchedules":[{"AmountIncludingVat":1,"BankingReference":"ref"}]}

[corranrogue9]

@JamezG12 Can you please share the controller method signature on the server side (and any implementation that you are comfortable sharing) so that we can investigate with a repro?

[corranrogue9]

@ElizabethOkerio do we expect support for deepinsert on both OData v4 and v4.01?

[ElizabethOkerio]

Yes this should be supported in v4.01 as well and users do not have to specify the OData-Version.