OEOrders WebApi Post Error Using new IC Locations

Does anybody have any idea why we get errors when posting to the OEOrders endpoint when using new IC Locations?  I can't figure out what the difference is between the locations.

Endpoint: localhost/.../OEOrders

Payload:

{
  "CustomerNumber": "HUS001",
  "OrderDate": "2022-08-08T10:27:49.9754706+00:00",
  "ShipToName": "LSD: 193/13-01-048-19W3/00",
  "ShipToAddressLine1": "WO: \"50028624",
  "ShipToAddressLine2": "HUSKY EDAM EAST VA3 HZ 13C7-1-3B13-1-48-19",
  "ShipViaCode": " ",
  "ShipViaCodeDescription": "",
  "DefaultLocationCode": "ASRLDN",
  "ExpectedShipDate": "2022-08-08T00:00:00+00:00",
  "DateRequested": "2022-08-08T00:00:00+00:00",
  "OrderComment": "",
  "OrderDetails": [
    {
      "Item": "300263",
      "Location": "ASRLDN",
      "QuantityOrdered": 1,
      "UseCommentsInstructions": false,
      "ShipViaCode": "ASRLDN",
      "PriceList": "HUS",
      "PricingUnitPrice": 1,
      "OrderUnitCost": 1,
      "OrderDetailLotNumbers": [
        {
          "LotNumber": "SRDC",
          "TransactionQuantity": 1
        }
      ]
    }
  ], 
  "OrderCommentsInstructions": []
}

Endpoint Error:

{   "error": {     "code": "General",     "message": { "lang": "en-US", "value": "" }   } }

Endpoint Response:

{"ClassName":"System.Net.WebException","Message":"The remote server returned an error: (409) Conflict.","Data":null,"InnerException":null,"HelpURL":null,"StackTraceString":"   at System.Net.HttpWebRequest.GetResponse()\r\n   at AlpineData.Services.OrderHistoryController.Checkout(OrderFormVM data) in E:\\_dev\\_Sandy\\Modules\\alpinedata\\Services\\OrderHistoryController.cs:line 3052","RemoteStackTraceString":null,"RemoteStackIndex":0,"ExceptionMethod":"8\nGetResponse\nSystem, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089\nSystem.Net.HttpWebRequest\nSystem.Net.WebResponse GetResponse()","HResult":-2146233079,"Source":"System","WatsonBuckets":null}