Paul Galvin's (old) SharePoint space [SharePoint

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Walk-through: Fix Employee Training Template Available Seats Unregister Bug

As many people know, the Employee Training template provided by Microsoft here has a bug that we can reproduce following these steps:

  • Create a class with a max size of 10 students.
  • Register –> Total available seats properly decrements by one.  Result: 9 available seats.
  • Unregister: –> Bug.  Total available seats should increment by one.  It does not.  Result: 9 available seats as per SharePoint, but in fact, there are 10 available seats.

Solution: Use SharePoint Designer to correct the workflow.

First, open up the site.  The folder list for me looks like this:

If we have a look at the "Attendee registration" workflow, we see that there is a step labeled "Enforce seating policy".  It looks like this:

This step in the workflow updates the item by incrementing the "Filled Seats" metadata column on the course.  If we pull that up in more detail, we see this:

That’s all the information we need to fix the unregistration workflow.

If we flip over to the unregistration workflow, there is no similar workflow step.  Add it as follows:

1: Expand "Attendee unregistration" and open up the XOML (see first screen shot if you’re lost).

2: Add a new workflow variable, "New Filled Seats" of type "Number".

3: Assign a value to "New Filled Seats" as shown:

4: Decrement the Filled Seats by 1:

5: Update the related Course item:

6: Make sure all the steps are in the right sequence.  For me, it looks like this:

7: Finish the workflow to re-build it.

8: Test.


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2 responses to “Walk-through: Fix Employee Training Template Available Seats Unregister Bug

  1. Brenda March 10, 2009 at 3:12 pm!1CC1EDB3DAA9B8AA!970.entry the images do not display in this blog post. Any way you can fix that? Or is this post located somewhere else where the images are viewable?

  2. Paul March 18, 2009 at 10:27 am

    Brenda, they do display for me. Which browser are you using? Maybe there\’s a problem with

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