How To Fix CH400 - No user was entered -> function not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: CH - CAD/PP integration messages

• Message number: 400

• Message text: No user was entered -> function not possible

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 CH400 - No user was entered -> function not possible ?

  The SAP error message "CH400 No user was entered -> function not possible" typically occurs when a user attempts to execute a function that requires a user ID to be specified, but no user ID has been provided. This error is often encountered in transaction codes related to user management or authorization checks.
  Cause:
  
  Missing User ID: The most common cause is that the user ID field is left blank when trying to perform an action that requires it.
  Configuration Issues: There may be issues with the configuration of the transaction or the program that is being executed.
  Authorization Issues: The user may not have the necessary authorizations to perform the action, leading to the system not allowing the function to proceed.
  
  Solution:
  
  Enter User ID: Ensure that you enter a valid user ID in the required field before executing the function.
  Check Transaction Configuration: If you are a system administrator, check the configuration of the transaction or program to ensure that it is set up correctly to accept user IDs.
  Review Authorizations: Verify that the user has the necessary authorizations to perform the action. This can be done by checking the user's roles and profiles in the user management area (transaction SU01).
  Debugging: If you have access to debugging tools, you can analyze the program to see where the error is being triggered and why the user ID is not being passed correctly.
  
  Related Information:
  
  Transaction Codes: This error may occur in various transaction codes, especially those related to user management (e.g., SU01, SU10).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  User Documentation: Refer to SAP documentation for the specific transaction or function you are trying to use, as it may provide additional context or requirements for user input.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.