How To Fix 3B105 - The main pers.no. must not be changed for an already posted period

SAP Error Message - Details

• Message type: E = Error

• Message class: 3B - Messages HR SK

• Message number: 105

• Message text: The main pers.no. must not be changed for an already posted period

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 3B105 - The main pers.no. must not be changed for an already posted period ?

  The SAP error message 3B105 ("The main pers.no. must not be changed for an already posted period") typically occurs in the context of personnel administration when there is an attempt to change the main personnel number (main pers.no.) for an employee in a period that has already been posted. This is a safeguard in SAP to maintain data integrity and ensure that historical records remain consistent.
  Cause:
  
  Change Attempt: The error is triggered when a user tries to change the main personnel number of an employee for a period that has already been processed and posted in the system.
  Data Integrity: SAP enforces this rule to prevent inconsistencies in payroll and other HR-related data that rely on the main personnel number.
  
  Solution:
  
  Check Posting Period: Verify if the period you are trying to change is indeed already posted. If it is, you will not be able to change the main personnel number for that period.
  Use Future Periods: If you need to change the main personnel number, ensure that you are doing so for a future period that has not yet been posted.
  Revert Changes: If the change is necessary for historical data, consider reverting the postings for that period (if feasible) and then making the change. This may involve complex processes and should be done with caution.
  Consult with HR/Payroll: If you are unsure about the implications of changing the main personnel number, consult with your HR or payroll department to understand the impact and get guidance on the correct procedure.
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or updates regarding this error message.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to personnel administration, such as PA30 (Maintain HR Master Data) or PA40 (Personnel Actions).
  User Authorization: Ensure that you have the necessary authorizations to make changes to personnel data.
  Testing in Sandbox: If you are unsure about the changes, consider testing the process in a sandbox environment before applying it to the production system.
  
  Best Practices:
  
  Always back up data before making significant changes.
  Document any changes made to personnel data for future reference.
  Regularly review and audit personnel data to ensure compliance with internal policies and regulations.
  
  If the issue persists or if you need further assistance, consider reaching out to your SAP support team or consulting with an SAP expert.