How To Fix ICM021 - Host Name Buffer Is Empty

ICM021 - Overview

• Message type: E = Error

• Message class: ICM - Messages for ICM Monitor

• Message number: 021

• Message text: Host Name Buffer Is Empty

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 ICM021 - Host Name Buffer Is Empty ?

  The SAP error message "ICM021 Host Name Buffer Is Empty" typically occurs in the Internet Communication Manager (ICM) when the system is unable to resolve a hostname or when the hostname buffer is not properly populated. This can happen due to various reasons, including configuration issues, network problems, or DNS resolution failures.
  Causes:
  
  Incorrect Hostname Configuration: The hostname specified in the SAP system configuration may be incorrect or not resolvable.
  DNS Issues: The Domain Name System (DNS) may not be able to resolve the hostname to an IP address.
  Network Connectivity Problems: There may be network issues preventing the SAP system from reaching the DNS server or the target host.
  ICM Configuration: The ICM may not be properly configured to handle the hostname or may have issues with its internal buffers.
  Missing or Incorrect Entries in the Hosts File: If the hostname is not correctly defined in the local hosts file, it may lead to this