How To Fix D4653 - Too many entries for host &1

SAP Error Message - Details

• Message type: E = Error

• Message class: D4 - DB2/400 specific messages

• Message number: 653

• Message text: Too many entries for host &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message D4653 - Too many entries for host &1 ?

  The SAP error message D4653, which states "Too many entries for host &1," typically occurs when there are too many entries in the SAP system's host table for a specific host. This can happen in various contexts, such as when dealing with network configurations, RFC destinations, or other system settings that involve host entries.
  Cause:
  
  Excessive Host Entries: The primary cause of this error is that the system has exceeded the maximum number of allowed entries for a specific host in the relevant configuration table.
  Configuration Issues: Misconfigurations in the network settings or RFC destinations can lead to an accumulation of unnecessary or duplicate entries.
  System Limitations: SAP systems have certain limitations on the number of entries that can be maintained for hosts, and exceeding this limit will trigger the error.
  
  Solution:
  
  Review Host Entries: Check the relevant configuration tables (like TMS, RFC destinations, etc.) for the host in question. You can use transaction codes like SM59 for RFC destinations or SICF for service configurations.
  Remove Duplicates: Identify and remove any duplicate or unnecessary entries for the host. Ensure that only the required entries are maintained.
  Check Configuration: Review the network configuration and ensure that it is set up correctly. This includes checking for any misconfigurations that might lead to excessive entries.
  Increase Limits: If necessary and feasible, consult with your SAP Basis team to see if there is a way to increase the limit for host entries, although this is generally not recommended without a thorough understanding of the implications.
  System Cleanup: Perform a cleanup of old or unused entries that may no longer be relevant to the current system configuration.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM59 (RFC Destinations), SICF (HTTP Services), and TMS (Transport Management System) for managing and reviewing host entries.
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message. SAP frequently updates its knowledge base with solutions for common issues.
  Documentation: Refer to SAP documentation for best practices on managing network configurations and RFC destinations to prevent similar issues in the future.
  
  If the problem persists after following these steps, it may be beneficial to consult with SAP support or your internal SAP Basis team for further assistance.