How To Fix HL102 - Communication error: &

HL102 - Overview

• 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.

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.

HL102 - Details

• 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