How To Fix SO402 - Check entry (logical connection not allowed)

SAP Error Message - Details

• Message type: E = Error

• Message class: SO - SAPoffice: message texts

• Message number: 402

• Message text: Check entry (logical connection not allowed)

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 SO402 - Check entry (logical connection not allowed) ?

  The SAP error message SO402 ("Check entry (logical connection not allowed)") typically occurs when there is an issue with the configuration of logical connections in the SAP system. This error is often related to the settings for communication between different SAP systems or between an SAP system and an external system.
  Cause:
  
  Incorrect Logical Connection: The logical connection you are trying to use may not be correctly defined or may not be allowed for the operation you are attempting.
  Missing Configuration: The necessary configuration for the logical connection may be missing or incomplete.
  Authorization Issues: The user may not have the necessary authorizations to use the specified logical connection.
  System Settings: The system settings may not allow the use of the specified logical connection for the transaction or process you are trying to execute.
  
  Solution:
  
  
  Check Logical Connection Configuration:
  
  Go to transaction code SM59 (RFC Destinations) and verify the configuration of the logical connection you are trying to use.
  Ensure that the connection is correctly defined and that it is active.
  
  
  
  Review Authorization:
  
  Ensure that the user has the necessary authorizations to access the logical connection. You may need to check the user's roles and authorizations.
  
  
  
  Check Transaction Settings:
  
  Review the transaction or process you are trying to execute to ensure that it is compatible with the logical connection you are using.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific details about the logical connection and its allowed uses.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59: To manage RFC destinations.
  SICF: To manage HTTP services.
  SPRO: To access the SAP Reference IMG for configuration settings.
  
  
  
  Common Scenarios:
  
  This error can occur during data transfer processes, such as ALE (Application Link Enabling) or IDoc processing, where logical connections are used to communicate between systems.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can analyze the program or function module that is generating the error to get more insights into the root cause.
  
  
  
  By following these steps, you should be able to identify and resolve the issue related to the SO402 error message in SAP.