Headcounts not tieing up with active assignments

Summary:

When we check the headcount for a specific year, on the Line Manager dashboard, the number is far less when compared to the number of persons with active assignments.

Content (required):

Is there any process which needs to be run, for the headcount to be updated, and, made available in the PVO's which has the headcount related columns

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):