How To Fix ISI021 - Message not sent

ISI021 - Overview

• Message type: E = Error

• Message class: ISI - Message class for Supplier Workplace

• Message number: 021

• Message text: Message not sent

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 ISI021 - Message not sent ?

  The SAP error message ISI021 ("Message not sent") typically occurs in the context of the SAP Information Steward or SAP Data Services when there is an issue with message processing or communication. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the message broker or the target system.
  Configuration Errors: Incorrect configuration settings in the SAP system or the message broker can lead to this error.
  Message Broker Issues: The message broker (like SAP PI/PO or other middleware) may be down or not properly configured.
  Authorization Issues: The user or service account may not have the necessary permissions to send messages.
  Message Format Issues: The message being sent may not conform to the expected format or schema, leading to rejection.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there are no network issues preventing communication between systems. You can use tools like ping