How To Fix /SAPTRX/ERRMSG021 - Communication failure

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPTRX/ERRMSG -

• Message number: 021

• Message text: Communication failure

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 /SAPTRX/ERRMSG021 - Communication failure ?

  The SAP error message /SAPTRX/ERRMSG021 Communication failure typically indicates a communication issue between the SAP system and an external system or service. This could be due to various reasons, including network issues, configuration problems, or service unavailability.
  Causes:
  
  Network Issues: Problems with the network connection between the SAP system and the external system can lead to communication failures.
  Service Unavailability: The external service or system that SAP is trying to communicate with may be down or not reachable.
  Configuration Errors: Incorrect configuration settings in the SAP system or the external system can prevent successful communication.
  Firewall or Security Settings: Firewalls or security settings may block the communication between the systems.
  Timeouts: If the response from the external system takes too long, it may result in a timeout error.
  Incorrect Credentials: If the communication requires authentication, incorrect credentials can lead to failure.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the SAP system and the external system is