How To Fix GW639 - Failed to send datagram

GW639 - Overview

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 639

• Message text: Failed to send datagram

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 GW639 - Failed to send datagram ?

  The SAP error message GW639 "Failed to send datagram" typically indicates an issue with the communication between the SAP system and an external system or service, often related to the SAP Gateway. This error can arise due to various reasons, including network issues, configuration problems, or resource limitations.
  Causes:
  
  Network Issues: Problems with the network connection, such as firewalls blocking traffic, DNS resolution issues, or network outages.
  Configuration Errors: Incorrect settings in the SAP Gateway configuration or in the external system's configuration.
  Resource Limitations: Insufficient resources on the SAP system or the external system, such as memory or CPU constraints.
  Timeouts: The datagram may not be sent due to timeouts in the communication process.
  SAP Gateway Settings: Issues with the SAP Gateway settings, such as incorrect port numbers or IP addresses.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the SAP system and the external system is stable. Use tools like ping or traceroute to diagnose