TFS Cannot complete Product Backlog Item because there is no transition from "Committed" with the action "Microsoft.VSTS.Action.CheckIn"

We have an on-prem TFS 2018 Update 2 instance and are running into an issue during this workflow:

Create a product backlog item
Write code
Create a pull request and associate the product backlog item with it
Complete the code review and mark the pull request as approved
Click "Complete" and the pull request is merged into master. Associated items should be marked as Done but are not and instead their State doesn't change.

I just noticed this yellow error message popup after clicking Approve:

VS1640134: Cannot complete Product Backlog Item 10275 because there is no transition from 'Committed' with the action "Microsoft.VSTS.Actions.Checkin". Learn more

(1 more work item will not be completed)

I can't find anything on that error code VS1640134 and we're just using regular agile scrum work items without any added or custom fields.

The message referenced this article: https://learn.microsoft.com/en-us/vsts/work/customize/reference/automate-field-assignments-state-transition-reason?view=vsts

VSTS twitter support pointed me to this article: https://learn.microsoft.com/en-us/vsts/work/work-items/guidance/scrum-process-workflow?toc=%2Fvsts%2Fwork%2Fwork-items%2Ftoc.json&bc=%2Fvsts%2Fwork%2Fbreadcrumb%2Ftoc.json&view=vsts#track-progress

But neither seem to explain how to resolve the problem. Does anyone know how to resolve this?

UPDATE: After forgetting about this problem it was pushed back up on my agenda. I reviewed the answer that's now marked as accepted and that process generally worked. I made the following edits to the default items:

Project Backlog Item XML:

        <TRANSITION from="New" to="Done">
          <REASONS>
            <DEFAULTREASON value="Work finished" />
          </REASONS>
          <FIELDS>
            <FIELD refname="Microsoft.VSTS.Common.ClosedDate">
              <SERVERDEFAULT from="clock" />
            </FIELD>
          </FIELDS>
          <ACTIONS>  
            <ACTION value="microsoft.vsts.actions.checkin"/>  
          </ACTIONS> 
        </TRANSITION>
        <TRANSITION from="Approved" to="Done">
          <REASONS>
            <DEFAULTREASON value="Work finished" />
          </REASONS>
          <FIELDS>
            <FIELD refname="Microsoft.VSTS.Common.ClosedDate">
              <SERVERDEFAULT from="clock" />
            </FIELD>
          </FIELDS>
          <ACTIONS>  
            <ACTION value="microsoft.vsts.actions.checkin"/>  
          </ACTIONS> 
        </TRANSITION>
        <TRANSITION from="Committed" to="Done">
          <REASONS>
            <DEFAULTREASON value="Work finished" />
          </REASONS>
          <FIELDS>
            <FIELD refname="Microsoft.VSTS.Common.ClosedDate">
              <SERVERDEFAULT from="clock" />
            </FIELD>
          </FIELDS>
          <ACTIONS>  
            <ACTION value="microsoft.vsts.actions.checkin"/>  
          </ACTIONS> 
        </TRANSITION>

Bug XML:

        <TRANSITION from="New" to="Done">
          <REASONS>
            <DEFAULTREASON value="Work finished" />
          </REASONS>
          <FIELDS>
            <FIELD refname="Microsoft.VSTS.Common.ClosedDate">
              <SERVERDEFAULT from="clock" />
            </FIELD>
          </FIELDS>
          <ACTIONS>  
            <ACTION value="microsoft.vsts.actions.checkin"/>  
          </ACTIONS> 
        </TRANSITION>
        <TRANSITION from="Approved" to="Done">
          <REASONS>
            <DEFAULTREASON value="Work finished" />
          </REASONS>
          <FIELDS>
            <FIELD refname="Microsoft.VSTS.Common.ClosedDate">
              <SERVERDEFAULT from="clock" />
            </FIELD>
          </FIELDS>
          <ACTIONS>  
            <ACTION value="microsoft.vsts.actions.checkin"/>  
          </ACTIONS> 
        </TRANSITION>
        <TRANSITION from="Committed" to="Done">
          <REASONS>
            <DEFAULTREASON value="Work finished" />
          </REASONS>
          <FIELDS>
            <FIELD refname="Microsoft.VSTS.Common.ClosedDate">
              <SERVERDEFAULT from="clock" />
            </FIELD>
          </FIELDS>
          <ACTIONS>  
            <ACTION value="microsoft.vsts.actions.checkin"/>  
          </ACTIONS> 
        </TRANSITION>

Solution

According to the provided link, you need to export your PBI's XML, and in the transition "from Committed" to another state you need to add these lines:

 <ACTIONS>  
  <ACTION value="microsoft.vsts.actions.checkin"/>  
 </ACTIONS>

For example:

 <TRANSITION from="Committed" to="Ready To Build">  
   <REASONS>
     ....
   </REASONS>
      <ACTIONS>  
      <ACTION value="microsoft.vsts.actions.checkin"/>  
      </ACTIONS>  
</TRANSITION>

Then you need to import back the XML file into the TFS.

For more information about export/import: Click Here