How To Fix SPN006 - Required format: '@'

SAP Error Message - Details

• Message type: E = Error

• Message class: SPN - SPnego

• Message number: 006

• Message text: Required format: '@'

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 SPN006 - Required format: '@' ?

  The SAP error message SPN006 indicates that there is an issue with the format of the principal name used in the context of Kerberos authentication. The required format for the principal name is <principal name>@<domain name>. This error typically arises when the principal name is not correctly specified, which can lead to authentication failures.
  Cause:
  
  Incorrect Principal Name Format: The principal name does not follow the required format, which should include both the principal name and the domain name separated by an "@" symbol.
  Configuration Issues: There may be misconfigurations in the SAP system or the Kerberos setup, such as incorrect entries in the SAP profile or the Kerberos configuration files.
  Missing or Incorrect Domain: The domain part of the principal name may be missing or incorrectly specified.
  Typographical Errors: Simple typos in the principal name or domain can lead to this error.
  
  Solution:
  
  
  Check Principal Name Format: Ensure that the principal name is correctly formatted as <principal name>@<domain name>. For example, if the principal name is sapuser and the domain is example.com, it should be [e-mail].
  
  
  Review Configuration:
  
  Check the SAP profile parameters related to Kerberos authentication (e.g., login/kerberos/krb5_conf).
  Ensure that the Kerberos configuration file (typically krb5.conf) is correctly set up and that it includes the correct realm and domain mappings.
  
  
  
  Verify Domain Settings: Make sure that the domain specified in the principal name is correct and matches the domain configured in your Kerberos setup.
  
  
  Test Kerberos Authentication: Use tools like kinit to test Kerberos authentication with the specified principal name to ensure that it works outside of SAP.
  
  
  Check for Typos: Double-check for any typographical errors in the principal name or domain.
  
  
  Consult Documentation: Refer to SAP and Kerberos documentation for specific configuration guidelines and troubleshooting steps.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to Kerberos authentication for any known issues or additional troubleshooting steps.
  Kerberos Documentation: Review the official Kerberos documentation for details on principal name formats and configuration.
  System Logs: Look at the SAP system logs (transaction SM21) and the application logs (transaction SLG1) for more detailed error messages that may provide additional context.
  
  By following these steps, you should be able to resolve the SPN006 error and ensure that the principal name is correctly formatted for Kerberos authentication in your SAP environment.