We couldn’t open your plan – Dynamics 365 Project Operations

This one was popping up randomly and I couldn’t figure out. Finally got to the bottom of it today.

When creating a new project in Dynamics 365 Project Operations, there’s a couple of steps that have to happen:

1. Create the project
2. Enter a project manager
3. Add the team
4. Add the tasks, and assign the team members to it

Every once in a while, when trying to create the tasks, I was getting this error message:

We couldn’t open your plan.

As you could see, it also helpfully suggested to just wait and open it later. Well, I waited a long time, and it never fixed itself.

How I troubleshot it

Well, like normal, I just poked around again. After spending some time on it, I came across the “PSS error logs” form. You can find this form in the Settings module under the “schedule integration” button group.

Once I found this form, I saw an “XrmCalendarError”. Clicking into the details yielded the following error message:

CalendarId: ‘2e79b1b6-114a-46cb-90bd-9ae97a02421c’; TeamMemberIds: ‘b0918aa2-55bb-ef11-b8e8-6045bdd4ca81’; Errors:
NoCalendarRules:

Another day, another obscure error message. At least it gave me some ideas to look at.

There were only two team members assigned to this particular project; the project manager and another user. I use XRMtoolbox and looked at the msdyn_projectteam entity to see if there were any calendars referenced there – there weren’t.

My next step was to look at the calendar causing the problem. When I did that, I saw that there was a “primaryuserid” assigned to it. I then found out who this user was and did some digging.

What was the problem?

Lo and behold, the user didn’t have any working dates in their calendar.

How did I fix it?

I created some working dates for the user.

After doing this, when I clicked on the “Tasks” tab, the error went away and the form opened properly.

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