How To Fix R1423 - Personnel number &1 has already been assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: R1 - Business Partner Messages from S_BUPA_GENERAL

• Message number: 423

• Message text: Personnel number &1 has already been assigned

Self-Explanatory Message

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• What is the cause and solution for SAP error message R1423 - Personnel number &1 has already been assigned ?

  The SAP error message R1423, which states "Personnel number &1 has already been assigned," typically occurs in the Human Capital Management (HCM) module when there is an attempt to create or assign a personnel number that is already in use for another employee or record in the system.
  Cause:
  
  Duplicate Personnel Number: The personnel number you are trying to assign is already assigned to another employee or record in the system.
  Data Entry Error: There may have been a mistake in data entry, leading to an attempt to create a duplicate personnel number.
  System Configuration: The system may not be configured to allow the reuse of personnel numbers, which is standard in many organizations to maintain data integrity.
  
  Solution:
  
  Check Existing Personnel Numbers: Verify if the personnel number you are trying to assign is already in use. You can do this by searching for the personnel number in the relevant SAP transaction (e.g., PA20 or PA30).
  Use a Different Personnel Number: If the personnel number is indeed in use, you will need to assign a different, unique personnel number to the employee or record you are trying to create.
  Review Data Entry: Ensure that the data being entered is correct and that there are no typographical errors leading to the attempt to assign an existing personnel number.
  Consult with HR or IT: If you believe the personnel number should not be in use or if there are issues with the configuration, consult with your HR department or IT support team for further investigation and resolution.
  Check for Deactivated Employees: If the personnel number belongs to a deactivated employee, you may need to check the status of that employee and determine if the personnel number can be reused or if it needs to remain inactive.
  
  Related Information:
  
  Transaction Codes: Common transaction codes related to personnel management include PA20 (Display HR Master Data), PA30 (Maintain HR Master Data), and PA40 (Personnel Actions).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional context or solutions for specific scenarios.
  Documentation: Review SAP documentation or user manuals related to personnel management for best practices on managing personnel numbers and avoiding duplication.
  
  By following these steps, you should be able to resolve the R1423 error and successfully manage personnel numbers in your SAP system.