How To Fix PU645 - Could not create or change RFC destination &1

PU645 - Overview

• Message type: E = Error

• Message class: PU - Upgrade and Transport Log Messages

• Message number: 645

• Message text: Could not create or change RFC destination &1

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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PU645 - Details

• The SAP error message PU645, which states "Could not create or change RFC destination &1," typically occurs when there is an issue with creating or modifying a Remote Function Call (RFC) destination in the SAP system. This can happen for various reasons, and understanding the cause is essential for finding a solution.
  Causes of Error PU645
  
  
  Authorization Issues: The user attempting to create or change the RFC destination may not have the necessary authorizations. This is a common cause of many errors in SAP.
  
  
  Incorrect Parameters: The parameters provided for the RFC destination may be incorrect or incomplete. This includes the target system's details, logon credentials, or connection type.
  
  
  Technical Issues: There may be underlying technical issues, such as network problems, that prevent the system from connecting to the target system.
  
  
  Configuration Errors: The SAP system may not be properly configured to allow the creation or modification of RFC destinations.
  
  
  System Lock: The system might be