Error while creating multimedia component using core service 2013

Question

I am able to delete component using core service client, but when i am trying to create and save one, i get below mentioned exception.

client.Open();
BinaryContentData bcd = new BinaryContentData{
    UploadFromFile = fileInfo.Name,
    MultimediaType = new LinkToMultimediaTypeData(),
    Filename = fileInfo.Name,
    IsExternal = false};
ComponentData compData = new ComponentData();
compData.ComponentType = ComponentType.Multimedia;
compData.BinaryContent= bcd;
compData.LocationInfo = new LocationInfo() { OrganizationalItem = new LinkToOrganizationalItemData() {IdRef = folderuri}};  
compData.Title = MakeValidFileName(fileInfo.Name);
compData.Schema = new LinkToSchemaData() {  IdRef = schemauri };
compData.ApprovalStatus = new LinkToApprovalStatusData {IdRef = "tcm:0-0-0" };
compData.Id = "tcm:0-0-0";
client.Save(compData, new ReadOptions());
client.CheckIn(compData.Id, null);
client.Close();

Any focus on the same is appreciated.

Event Viewer shows following logs :

Unexpected item type: Schema.

Component: Tridion.ContentManager.CoreService Errorcode: 0 User: NT AUTHORITY\NETWORK SERVICE  StackTrace Information Details:   

    Unexpected item type: Schema.
  Component: Tridion.ContentManager.CoreService Errorcode: 0 User: NT AUTHORITY\NETWORK SERVICE  StackTrace Information Details:
   at Tridion.ContentManager.ContentManagement.RepositoryLocalObject.AssertValidContainer(IContainer container)
   at Tridion.ContentManager.ContentManagement.RepositoryLocalObject.AssertValidContainer()
   at Tridion.ContentManager.ContentManagement.RepositoryLocalObject..ctor(Session session, TcmUri parentId)
   at Tridion.ContentManager.ContentManagement.Component..ctor(Session session, TcmUri parentId)
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCrawlMark& stackMark)
   at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
   at System.Activator.CreateInstance(Type type, Object[] args)
   at Tridion.ContentManager.Session.GetNewObject(Type objectType, String containerUri)
   at Tridion.ContentManager.Session.GetNewObject(IdentifiableObjectData data)
   at Tridion.ContentManager.CoreService.CoreServiceBase.Save(IdentifiableObjectData deltaData, ReadOptions readBackOptions)
   at SyncInvokeSave(Object , Object[] , Object[] )
   at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
   at Tridion.ContentManager.CoreService.CoreServiceInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)
   at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

while Code level debugging gives following exception message and stack trace :

Server stack trace:

   at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]:

at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)    at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)    at Tridion.ContentManager.CoreService.Client.ISessionAwareCoreService.Save(IdentifiableObjectData deltaData, ReadOptions readBackOptions)

Answer 1

I would expect the AssertValidContainer method check that the item you are trying to create (or update) can actually be saved in the location that you are trying.

You may want to:

1. Double check that you are definitely trying to create a Component (and not another type) in your code
2. Ensure that you are trying to save the (Multimedia) Component in the correct location (a Folder).
3. If you are definitely trying to save an item into a Folder, then make sure that the Folder does not have a Mandatory Linked Schema set (or that it is the correct type).

You may want to test this by trying to create the same type of Component in this Folder using the standard Content Management Explorer (CME) interface.