How To Fix 5Z451 - Reference personnel number &1 has an invalid format

5Z451 - Overview

• Message type: E = Error

• Message class: 5Z - IS-HR/PSG Public Sector Payroll - Germany

• Message number: 451

• Message text: Reference personnel number &1 has an invalid format

What causes this issue?

The reference personnel number is stored on the database as a
12-character field. The first 8 characters of the reference personnel
number must be digits and the last 4 characters must be blanks. The
reference personnel number can only be linked to a personnel number in
the system if this is the case.
The last 4 characters of the reference personnel number &V1& are &V2&
as well as blanks.

System Response

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 5Z451 - Reference personnel number &1 has an invalid format ?

  The SAP error message 5Z451, which states "Reference personnel number &1 has an invalid format," typically occurs when there is an issue with the format of the personnel number being referenced in a transaction or process. Here are the potential causes, solutions, and related information for this error:
  Causes:
  
  
  Incorrect Format: The personnel number may not conform to the expected format defined in the system. This could include issues such as:
  
  Wrong number of digits (too few or too many).
  Inclusion of invalid characters (e.g., letters or special characters).
  
  
  
  
  Configuration Issues: The configuration settings for personnel numbers in the SAP system may not be set up correctly, leading to format validation errors.
  
  
  Data Entry Errors: The personnel number may have been entered incorrectly by the user, leading to an invalid format.
  
  
  System Customization: If the SAP system has been customized, the rules for valid personnel numbers may have changed, causing previously valid numbers to be flagged as