SAP Knowledge Base Article - Public

2835790 - How To Use The Same Username For Rehire With New Employment?


How to use the same username while rehiring an employee with new employment?

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SAP Successfactors employee central - Core


  • When employees change legal entity within a company, for example, in the case of an international transfer, the standard practice (especially for payroll reasons) is to terminate one employment and rehire them in a new employment. This means that the system would generate a new user name and user ID automatically. This is however very confusing for the users and causes disruptions.

  • To avoid issues, you can rehire an employee with new employment and the employee can use their original username (for their first employment) to login into the system. However, after you enable this feature, there must be a complete HRIS sync on existing user data before the rehired users can start using their old user names for logon.

  • Since the user name field is required and unique, the employee will still receive a new unique user name for their new employment, but for accessing the system they will be able to use the user name associated to their original employment. The employee must reset their password though. The user name is only for access to the system and does not automatically grant access to everything pertaining to the new employment.


  • Once this setting is activated, it can NEVER be changed.

  • Enabling the "Enable Login with Old User Name" will not change existing users' data, it only affects users after this enablement. This feature does not work retrospectively.


  1. Navigate to the Admin Center.

  2. In the Tools search, enter Company System and Logo Settings.

  3. Select Enable Login with Old User Name.Note: Remember that this cannot be changed once activated in the system!

  4. Save your changes.

  5. View here: Allowing Rehires to Keep Existing Logon


The feature has been enabled. After the next HRIS sync is completed, rehired users can start using their old user names for logon.

Next Steps:

The HRIS sync is usually triggered when a new user has been created. If there hasn’t been any new user created in the system, you can create a dummy user to trigger the sync. 2080728 - Employee Central: What is HRIS Sync? Guide: Hard-Coded for Syncing

FAQ - Additional Information

Q) Where can I get information on this from the Guide?


See Also

  • 2677136 - Enable Login with Old User Name - Explained
  • 3169765 - [Onboarding] FAQ on Rehire with old employement - Onboarding 2205 release update
  • 3236800 -Rehire with New Employment UserID and PersonID - Onboarding
  • 2495643 - SuccessFactors User IDs - Clarifying the Different IDs
  • 2748162 - Is it possible to hide the Past or Multiple Employments in the Employee Profile Header?
  • 2424358 - Rehire Inactive Employee with New Employment
  • 2835790 - How To Use The Same Username For Rehire With New Employment?
  • 2861759 - Rehire Inactive Employee with New Employment through import


Rehire, New Employment, The user name already exists. Please enter a new unique value, user ID, username, Enable log in with old user name in case of a rehire with a new employment,The default system behavior will enforce the log in with the new user name that comes with every new employment, Allowing Rehires to Keep Existing Logon , KBA , LOD-SF-EC-HIR , Hire & Rehire Wizards , How To


SAP SuccessFactors Employee Central all versions ; SAP SuccessFactors HCM Core 1905