I have an OData action in my OData service.

I am using an OData action - callfunction in MDK to edit values in the backend. Below is the action code.
{
"ActionResult": {
"_Name": "receive"
},
"OnFailure": "/supplierDemoApp5/Actions/Failure.action",
"OnSuccess": "/supplierDemoApp5/Actions/closeModel_Page.action",
"Target": {
"Function": {
"Name": "ProcessMilestoneEvent",
"Parameters": {
"DeliveryNote": "",
"DocumentDate": "2017-04-13",
"FldLogsContainerID": "",
"FldLogsGRQty": 1,
"FldLogsMilestoneEventID": "RECEIVED_AT_BASE",
"FldLogsStorageLocationID": "",
"FldLogsSuplrItemQuantityUnit": "EA",
"FldLogsSuplrItemVislInspCode": "IP",
"MaterialDocumentHeaderText": "",
"PackagingMaterial": "",
"PostingDate": "2017-04-13"
}
},
"Service": "/supplierDemoApp5/Services/Sample.service"
},
"_Type": "Action.Type.ODataService.CallFunction"
}
The OnFailure is getting called and getting this error.

Can anyone help me fix this error ?
Thank You