2600376 - Invalid User error when importing manager or job relationship

When importing a manager via Job History import or Job Relationship import returns the error User B15 is an invalid user

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

Employee Central: Employee Data Import

 Import manager to job history or import jobrelationship

Importing User B15 effective as of 06/01/2016 is not possible because hire date of user B15 is 15/07/2017 - On 06/01/2016 B15 waswn't an employee of the company

Import manager with an effective date not before the hire date of the manager.

Hire Date, Supervisor, Manager , KBA , LOD-SF-EC-EDP , Import Employee Data (EC Core only) , Problem

SAP SuccessFactors Employee Central all versions ; SAP SuccessFactors HXM Core all versions