Terminate Contingent Worker Error

Summary:

I have a contingent worker that I have hired as an employee . I have put the starting date on the 18th which is 2 days from now. When I go to person management to terminate that contingent worker I get the error below.

You must enter a valid value for the Action ID field. (PER-1530231)

You need to enter a valid value in the field for the transaction to succeed. For example, you must only enter a number in the Job ID field.

Has anyone face this issue in the past and what was the solution?

Content (required):

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