How To Fix WZ455 - Select one user type

SAP Error Message - Details

• Message type: E = Error

• Message class: WZ - Workflow: Model objects

• Message number: 455

• Message text: Select one user type

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WZ455 - Select one user type ?

  SAP Error Message:
  
  WZ455 - Select one user type
  
  Cause:
  This error message typically appears in SAP when you are required to select a user type but have not done so. It usually occurs in user management transactions or reports where the system expects you to specify the type of user (e.g., Dialog, System, Communication, Service, etc.) before proceeding.
  For example, when creating or modifying users in transaction SU01 or when running user-related reports, the system needs to know which category of users you want to work with. If no user type is selected, SAP throws the WZ455 message prompting you to make a selection.
  
  Solution:
  
  
  Select a user type:
  
  When prompted or when you see this message, choose one user type from the available options. The user types typically include:
  
  Dialog (for interactive users)
  System (for background processing)
  Communication (for RFC or external communication)
  Service (for service users)
  Reference (for reference users)
  
  
  
  How to select:
  
  In the selection screen or dialog box where the error appears, look for the field labeled "User Type" or similar and pick the appropriate user type.
  
  
  If you are running a report or transaction:
  
  Make sure the selection criteria include a user type. If the selection screen has a mandatory field for user type, fill it in before executing.
  
  
  
  Related Information:
  
  
  Transaction SU01: User maintenance transaction where user types are assigned.
  
  
  User Types in SAP:  
  
  Dialog (Type A): Regular users who log on interactively.  
  System (Type B): Users for background processing.  
  Communication (Type C): Users for external communication (RFC).  
  Service (Type S): Users for services.  
  Reference (Type L): Users that reference other users.
  
  
  
  SAP Notes:
  
  If the error persists despite selecting a user type, check for SAP Notes related to user management or the specific transaction you are using.
  
  
  Authorization:
  
  Ensure you have the necessary authorizations to view or select user types.
  
  
  
  Summary:
  
  Cause: No user type selected where one is required.  
  Solution: Select one user type from the available options before proceeding.  
  Related: User management transactions (e.g., SU01), user types definitions, authorization checks.
  
  
  If you provide the exact transaction or context where you encounter this message, I can give more tailored advice.