TP4 : task-flow inconsistencies and errors

Question

I have a simple task flow with five activities.
1. the first one initialize a view object by calling the create operation on the view object, this is the default activity of the task-flow
2. the second operation is a view activity to edit the new created view. The view acitivity call a jspx page the all related elements from the view object to edit the data
3. the third is a view activity to display edited values before commiting or canceling. This view show an empty page with two buttons with fixed outcome (cancel, save).
4. and 5. are two task flow return that commit (save) or rollback (cancel). It is no parameter in return (at this stage).
A very simple task-flow.
My diagram show a warning and two errors.
The warning is on the first activity. It tell me into the source that "EL Token "bindings" is unknown.
Here is the code.
    <method-call id="initializeFlexItem">
      <method>#{bindings.Create.execute}</method>
      <outcome>
        <fixed-outcome>initialized</fixed-outcome>
      </outcome>
    </method-call>The errors are mentionned for the return task flow. Errors says that "Element commit not expected", "Element rollback not expected". May be the document doesn't correspond to its xmlschema.
I have an another warning the template-referernce tag that mention an document-id child is required and not present. The task-flow doesn't refer to any template. So the tag has not to be there, or attribute has not to be required.
Running the task-flow is not succesfull. I got a JBO-25301 error saying that the application module is not a root application module but has no parent. It seem not to be related to task-flow inconsistencies and errors but I don't know and would like my task-flow is fully correct to be sure.
Any idea, explanation, recommandation, workaround is welcome.

Answer 1

I have seem that the property inspector didn't reflect that the return activity was a commit or rollback activity. I added this property and the red x on the return activity disappeared from the diagram and no more errors was mentioned in source editor for these tags.
The code generated was this one:
    <task-flow-return id="commit">
      <outcome>
        <name>commit</name>
        <commit/>
      </outcome>
    </task-flow-return>
    <task-flow-return id="rollback">
      <outcome>
        <name>rollback</name>
        <rollback/>
      </outcome>
    </task-flow-return>