How To Fix L6123 - No R/2 system defined for queue & (internal table QUEUETAB)

SAP Error Message - Details

• Message type: E = Error

• Message class: L6 - LVS Link R/2 - ECC

• Message number: 123

• Message text: No R/2 system defined for queue & (internal table QUEUETAB)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message L6123 - No R/2 system defined for queue & (internal table QUEUETAB) ?

  The SAP error message L6123 "No R/2 system defined for queue & (internal table QUEUETAB)" typically occurs in the context of SAP's logistics and transportation management systems, particularly when dealing with the integration between SAP R/3 and R/2 systems. This error indicates that the system is unable to find a defined R/2 system for the specified queue.
  Cause:
  
  Missing Configuration: The most common cause of this error is that the R/2 system has not been properly configured in the SAP system. This could mean that the necessary entries in the relevant configuration tables are missing.
  Queue Definition Issues: The queue that is being referenced may not be correctly defined or may not exist in the system.
  Transport Layer Issues: There may be issues with the transport layer settings that prevent the system from recognizing the R/2 system.
  System Connectivity: There could be connectivity issues between the R/3 and R/2 systems, leading to the inability to access the required data.
  
  Solution:
  
  
  Check Configuration:
  
  Go to transaction code SM59 to check the RFC connections. Ensure that the R/2 system is correctly defined and that the connection is active.
  Verify the configuration in transaction SPRO under the relevant logistics or transportation management settings to ensure that the R/2 system is defined.
  
  
  
  Define the R/2 System:
  
  If the R/2 system is not defined, you will need to create a new entry. This can typically be done in the configuration settings for the relevant module (e.g., Logistics Execution).
  Ensure that all necessary parameters are filled in correctly.
  
  
  
  Check Queue Definitions:
  
  Use transaction SMQ1 (for outbound queues) or SMQ2 (for inbound queues) to check the status of the queues. Ensure that the queue in question is defined and active.
  
  
  
  Review Transport Layer Settings:
  
  Check the transport layer settings to ensure that they are correctly configured to allow communication between the R/3 and R/2 systems.
  
  
  
  Test Connectivity:
  
  Use the RFC test functionality in SM59 to test the connection to the R/2 system. Ensure that the connection is successful.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific version of your SAP system for any additional configuration steps or known issues.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message. SAP frequently releases notes that address known issues.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM59, SPRO, SMQ1, and SMQ2 for troubleshooting.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.