How To Fix HL102 - Communication error: &

SAP Error Message - Details

• Message type: E = Error

• Message class: HL - IWB: Help Links

• Message number: 102

• Message text: Communication error: &

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message HL102 - Communication error: & ?

  The SAP error message HL102, which indicates a "Communication error," typically arises in scenarios involving communication between SAP systems or between an SAP system and external systems. The specific cause of the error can vary, but it often relates to network issues, configuration problems, or issues with the underlying communication protocols.
  Possible Causes:
  
  Network Issues: Problems with the network connection, such as downtime, firewalls blocking traffic, or incorrect routing.
  Configuration Errors: Incorrect settings in the SAP system configuration, such as RFC destinations, logical system names, or communication parameters.
  Protocol Issues: Problems with the communication protocol being used (e.g., HTTP, RFC, etc.), including version mismatches or unsupported features.
  System Availability: The target system may be down or not reachable due to maintenance or other issues.
  Authorization Issues: Insufficient permissions for the user or system trying to establish the communication.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the systems is stable and that there are no firewalls or routers blocking the communication.
  Verify Configuration: 
  
  Check the RFC destination settings in transaction SM59 to ensure they are correctly configured.
  Ensure that the logical system names are correctly defined in transaction SCC4.
  
  
  Test Communication: Use the Test Connection feature in transaction SM59 to verify that the connection to the target system is working.
  Check System Status: Ensure that the target system is up and running. You can check the system logs or use transaction SM21 to look for any relevant error messages.
  Review Authorization: Ensure that the user or system has the necessary authorizations to perform the communication.
  Check SAP Notes: Look for any relevant SAP Notes that might address known issues related to this error message.
  
  Related Information:
  
  Transaction Codes: 
  
  SM59 (RFC Destinations)
  SM21 (System Log)
  SCC4 (Client Administration)
  
  
  SAP Notes: Search the SAP Support Portal for notes related to HL102 or communication errors for specific patches or updates.
  Logs: Review application logs and system logs for additional context around the error.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.