How To Fix /SAPCND/CUSTOMIZING301 - Communication failure: &1 &2 &3 &4

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPCND/CUSTOMIZING -

• Message number: 301

• Message text: Communication failure: &1 &2 &3 &4

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 /SAPCND/CUSTOMIZING301 - Communication failure: &1 &2 &3 &4 ?

  The SAP error message /SAPCND/CUSTOMIZING301 Communication failure: &1 &2 &3 &4 typically indicates a communication issue between the SAP system and a connected system or service. This error can occur in various contexts, such as during data transfer, when accessing external services, or when trying to connect to a remote system.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the external system.
  Configuration Errors: Incorrect configuration settings in the SAP system or the external system can lead to communication failures.
  Service Availability: The external service or system may be down or not reachable.
  Firewall Restrictions: Firewalls or security settings may be blocking the communication.
  Incorrect Credentials: If authentication is required, incorrect credentials can lead to communication failures.
  Timeouts: The request may be timing out due to long processing times or unresponsive services.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the SAP system can reach the external system. You can use tools like ping or traceroute to diagnose network issues.
  Review Configuration Settings: Verify the configuration settings in both the SAP system and the external system. Ensure that all necessary parameters are correctly set.
  Check Service Status: Confirm that the external service or system is up and running. If it is down, you may need to wait until it is restored.
  Firewall and Security Settings: Review firewall rules and security settings to ensure that they allow communication between the systems.
  Validate Credentials: If applicable, check that the credentials used for authentication are correct and have the necessary permissions.
  Increase Timeout Settings: If timeouts are an issue, consider increasing the timeout settings in the SAP system or the external service.
  
  Related Information:
  
  Transaction Codes: You may want to check transaction codes like SM21 (System Log) or ST22 (Dump Analysis) for more detailed error logs that can provide additional context.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the documentation for the specific integration or service you are using to ensure that all prerequisites and configurations are met.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with your SAP Basis team or SAP support for further assistance.