How To Fix D4650 - An entry for host &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: D4 - DB2/400 specific messages

• Message number: 650

• Message text: An entry for host &1 already exists

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message D4650 - An entry for host &1 already exists ?

  The SAP error message D4650, which states "An entry for host &1 already exists," typically occurs when there is an attempt to create a new entry in the system for a host that already has an existing entry. This can happen in various contexts, such as when configuring network settings, creating RFC destinations, or managing system connections.
  Cause:
  
  Duplicate Entry: The most common cause is that there is already an entry in the system for the specified host. This could be due to a previous configuration or an attempt to create a new entry with the same name or IP address.
  Incorrect Configuration: Sometimes, the error can arise from incorrect configuration settings or parameters that lead to the system interpreting the new entry as a duplicate.
  Caching Issues: In some cases, caching issues or delays in the system can lead to the perception that an entry does not exist when it actually does.
  
  Solution:
  
  
  Check Existing Entries: 
  
  Go to the relevant transaction (e.g., SM59 for RFC destinations) and check if an entry for the specified host already exists. If it does, you may need to modify or delete the existing entry instead of creating a new one.
  
  
  
  Modify Existing Entry: 
  
  If you find that the entry already exists but needs to be updated, you can modify the existing entry with the required parameters instead of creating a new one.
  
  
  
  Delete Duplicate Entry: 
  
  If the existing entry is no longer needed or is incorrect, you can delete it. Ensure that you have the necessary authorizations to perform this action.
  
  
  
  Check for Caching Issues: 
  
  If you suspect caching issues, try refreshing the relevant configuration or restarting the application server to clear any stale cache.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or notes related to the specific transaction or configuration you are working with for any additional guidance or known issues.
  
  
  
  Related Information:
  
  Transaction Codes: Common transaction codes where this error might occur include SM59 (RFC Destinations), SMLG (Logon Groups), and others related to network configuration.
  SAP Notes: Check SAP Notes for any specific fixes or patches related to this error message. You can search the SAP Support Portal for relevant notes.
  System Logs: Review system logs (e.g., SM21) for any additional error messages or warnings that might provide more context about the issue.
  
  If the problem persists after following these steps, consider reaching out to your SAP Basis team or SAP support for further assistance.