We have setup a very simple approval workflow for a certain type of content. However, for some reason, the first manual activity couldn't be finished and thus, workflow being blocked.
Any attempt to finish the activity will prompt this error:
An item with the same key has already been added.
Unable to finish the Workflow Activity (tcm:x-xxxxx-xxxxxx)
Here's the data I'm working with (truncated for readability):
<Content xmlns="uuid:fac33fb4-7b36-465a-af40-f3b80c4f3f65">
<contactlist>
<name>Lorem ipsum dolor</name>
<address>sit amet consectetur</address>
<photo xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:type="simple" xlink:href="tcm:5-80196"
xlink:title="photo-1"></photo>
<email>email1@email.com</email>
<phone>interdu eget</phone>
<mailimage xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:type="simple" xlink:href="tcm:5-80195"
xlink:title="email-icon"></mailimage>
</contactlist>
<contactlist>
<name>Lorem ipsum dolor</name>
<address>sit amet consectetur</address>
<photo xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:type="simple" xlink:href="tcm:5-80197"
xlink:title="photo-2"></photo>
<email>email@email.com</email>
<phone>interdu eget</phone>
<mailimage xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:type="simple" xlink:href="tcm:5-80195"
xlink:title="email-icon"></mailimage>
</contactlist>
</Content>
Notice that I am reusing the same email-icon image for [mailImage] attribute. I'm inclined to think that this is causing the error because it's the only duplicated component link in the list.
If I remove the mail image component links and finish the activity, it works and I can proceed with the workflow. Odd huh?
I don't see any reason why I can't reuse component links in the same component in regard of workflows being able to proceed. I mean, CMS allowed me to save the component, why not allow me to proceed with Workflow?
EDIT: By the way, this is the error from the Event Logs:
Unable to finish the Workflow Activity (tcm:5-18430-131104)
An item with the same key has already been added.
Error Code:
0x80040000 (-2147221504)
Call stack:
System.ThrowHelper.ThrowArgumentException(ExceptionResource)
System.Collections.Generic.Dictionary`2.Insert(TKey,TValue,Boolean)
System.Collections.Generic.Dictionary`2.Add(TKey,TValue)
Tridion.ContentManager.Workflow.ActivityInstance.SaveBinariesAndGetBinaryIds(String,IDictionary`2)
Tridion.ContentManager.Workflow.ActivityInstance.OnFinishing(FinishActivityEventArgs)
Tridion.ContentManager.Workflow.ActivityInstance.Finish(ActivityFinish)
Tridion.ContentManager.BLFacade.Workflow.ActivityInstanceFacade.FinishActivity(UserContext,String,String,String,String,String,String)
ActivityInstance.FinishActivity