How To Fix L6124 - No R/2 queue defined for ECC queue & (internal table QUEUETAB)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 124

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

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message L6124 - No R/2 queue defined for ECC queue & (internal table QUEUETAB) ?

  The SAP error message L6124 "No R/2 queue defined for ECC queue" typically occurs in the context of SAP's logistics and warehouse management systems, particularly when dealing with the integration between SAP ECC (ERP Central Component) and older R/2 systems. This error indicates that the system is unable to find a defined queue for processing messages or data between these systems.
  Cause:
  
  Missing Configuration: The most common cause of this error is that the necessary configuration for the R/2 queue in the ECC system is missing or incorrectly set up.
  Queue Definition Issues: The internal table QUEUETAB may not have the required entries for the R/2 queue, leading to the inability to process messages.
  System Integration Issues: There may be issues with the integration setup between the ECC and R/2 systems, such as incorrect RFC destinations or communication settings.
  
  Solution:
  
  
  Check Queue Configuration:
  
  Go to transaction code SMQ1 (for outbound queues) or SMQ2 (for inbound queues) in the ECC system.
  Verify that the necessary queues are defined and active. If the R/2 queue is missing, you may need to create it.
  
  
  
  Define R/2 Queue:
  
  If the queue is not defined, you may need to create it using transaction SMQS or through the relevant configuration settings in the SAP system.
  Ensure that the queue is properly linked to the corresponding R/2 system.
  
  
  
  Review RFC Destinations:
  
  Check the RFC destinations in transaction SM59 to ensure that the connection to the R/2 system is correctly configured and active.
  Test the connection to ensure that it is working properly.
  
  
  
  Check for Transport Issues:
  
  If the configuration was recently transported from another system, ensure that all necessary objects and configurations were included in the transport.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific version of your SAP system for any additional configuration steps or known issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance, especially if this is a production environment.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SMQ1, SMQ2, SM59, and SMQS.
  SAP Notes: Search for SAP Notes related to this error message for any patches or updates that may address the issue.
  Integration Scenarios: Understand the integration scenarios between ECC and R/2 systems, as this can provide context for troubleshooting.
  
  By following these steps, you should be able to identify and resolve the cause of the L6124 error in your SAP system.