How To Fix SK402 - Transmission error to &

SK402 - Overview

• Message type: E = Error

• Message class: SK - SAPcomm messages

• Message number: 402

• Message text: Transmission error to &

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?

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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 SK402 - Transmission error to & ?

  The SAP error message SK402, which indicates a "Transmission error to &," typically occurs during the process of sending data or messages from one system to another within the SAP environment. This error can arise in various contexts, such as during IDoc processing, ALE (Application Link Enabling) communication, or when using SAP's messaging services.
  Causes of SK402 Transmission Error
  
  
  Network Issues: Problems with the network connection between the SAP systems can lead to transmission errors. This could be due to firewalls, routing issues, or network outages.
  
  
  Configuration Errors: Incorrect configuration settings in the ALE or IDoc setup can cause transmission failures. This includes incorrect partner profiles, logical system definitions, or port settings.
  
  
  System Availability: The target system may be down or unavailable, leading to transmission errors when attempting to send data.
  
  
  Message Format Issues: If the data being sent does not conform to the expected format or structure, it may result in a transmission error.
  
  
  Authorization