How To Fix WZ451 - Specify name and first name of user

SAP Error Message - Details

• Message type: E = Error

• Message class: WZ - Workflow: Model objects

• Message number: 451

• Message text: Specify name and first name of user

Self-Explanatory Message

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• What is the cause and solution for SAP error message WZ451 - Specify name and first name of user ?

  SAP Error Message:
  
  WZ451 - Specify name and first name of user
  
  Cause:
  This error occurs when the system requires the user’s last name and first name to be entered, but one or both of these fields are missing or empty in the user master data or during a user creation/change process.
  Typically, this happens in the following scenarios:
  
  When creating or modifying a user in transaction SU01 or related user maintenance transactions.
  When the system validation checks for mandatory fields in user master data and finds that the Last Name (Name) and/or First Name fields are not filled.
  It may also occur during user import or synchronization processes if the user data is incomplete.
  
  
  Solution:
  To resolve the error WZ451, you need to:
  
  
  Enter the Last Name and First Name:
  
  Go to transaction SU01 (User Maintenance).
  Enter the user ID and click Change.
  Navigate to the Address tab.
  Fill in the Last Name (Name) and First Name fields.
  Save the user data.
  
  
  
  Check User Data Upload/Import:
  
  If users are created via batch input, LSMW, or other upload tools, ensure that the source data contains valid and non-empty values for last name and first name.
  Correct the source data and re-import.
  
  
  
  Check Custom Validations or User Exits:
  
  Sometimes, custom validations or user exits enforce mandatory fields.
  Review any custom code in user creation/change processes that might trigger this message.
  Adjust the code or ensure data completeness accordingly.
  
  
  
  
  Related Information:
  
  Transaction SU01: User maintenance where you can view and edit user master data.
  User Master Data Fields:  
  
  Name (Last Name): Mandatory for identification.  
  First Name: Also mandatory for user identification.
  
  
  Message Class: WZ (related to user master data validations).
  SAP Notes: If the problem persists or is related to a specific SAP version, check SAP Notes for any known issues or patches.
  Authorization: Ensure you have the necessary authorization to change user master data.
  
  
  Summary:
  WZ451 is a warning/error indicating that the user’s last name and first name must be specified. The fix is to enter these mandatory fields in the user master record (SU01) or ensure that any automated user creation process includes these fields.
  
  If you need further assistance, please provide the context in which the error occurs (e.g., manual user creation, batch upload, specific transaction).