Getting Microsoft.Azure.Cosmos.Client: Response status code does not indicate success: BadRequest (400)

[aatek]

I'm attempting to run the event-sourcing sample code. Everything builds with no issues, however, when I attempt to send a few items via the console app I get the following exception:

Microsoft.Azure.Cosmos.Client: Response status code does not indicate success: BadRequest (400); Substatus: 0; ActivityId: b529d0fd-c0ce-40c2-9baf-7396cab58e6c; Reason: ({"Errors":["One of the specified inputs is invalid"]}

The JSON payload being sent by the console app looks fine:

{ "id": "8b98fcc7-867f-4426-a31c-c421510715ee", "CartId": "343a8856-0936-48de-b602-e7912cbd4df1", "SessionId": "4908cb2d-9478-4d0d-b2a0-49befd735267", "UserId": 791, "EventType": "cart_created", "Product": null, "QuantityChange": 0, "ProductsInCart": [], "EventTimestamp": "2025-04-10 7:13:09 AM" }

I have installed func 4.0.7030 and dotnet 9.0.200 on Win 11

I'm curious and if anyone can reproduce the exception or if I'm doing something wrong in either my setup. Any guidance would be appreciated!