How To Fix /SCMB/SCR_BIF018 - Key &1 not unique; the logical system is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/SCR_BIF -

• Message number: 018

• Message text: Key &1 not unique; the logical system is missing

Self-Explanatory Message

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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 /SCMB/SCR_BIF018 - Key &1 not unique; the logical system is missing ?

  The SAP error message /SCMB/SCR_BIF018 Key &1 not unique; the logical system is missing typically occurs in the context of SAP Supply Chain Management (SCM) when there is an issue with the uniqueness of a key in the system. This error indicates that the system has encountered a situation where it expects a unique key, but it has found multiple entries that match the key without a clear logical system to differentiate them.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that there are duplicate entries in the database for the specified key. This can happen if data was incorrectly imported or if there are inconsistencies in the data management processes.
  Missing Logical System: The error specifically mentions that the logical system is missing, which means that the system cannot determine which logical system the key should be associated with. This can occur if the logical system is not properly defined or if the configuration is incomplete.
  Configuration Issues: There may be issues with the configuration of the logical systems in the SAP landscape, leading to ambiguity in identifying the correct entry.
  
  Solution:
  
  
  Check for Duplicates: 
  
  Use transaction codes like SE16 or SE11 to check the relevant database table for duplicate entries associated with the key in question. Identify and resolve any duplicates.
  
  
  
  Define Logical Systems:
  
  Ensure that all logical systems are correctly defined in the system. You can check this in transaction SALE (Logical System Configuration) or SPRO (Customizing).
  Make sure that the logical system is assigned correctly to the relevant client and that it is active.
  
  
  
  Data Consistency:
  
  Run consistency checks on the relevant data to ensure that there are no inconsistencies. This may involve using specific SAP reports or tools designed for data consistency checks.
  
  
  
  Review Configuration:
  
  Review the configuration settings related to the SCM module and ensure that all necessary settings are in place. This includes checking the settings for master data, transaction data, and any relevant integration points.
  
  
  
  Consult Documentation:
  
  Refer to SAP Notes and documentation related to the specific error message for any additional guidance or patches that may be available.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking for duplicates and ensuring proper configuration, consider reaching out to SAP Support for further assistance. Provide them with the error message details and any relevant context to help them diagnose the issue.
  
  
  
  Related Information:
  
  Transaction Codes: SE16, SE11, SALE, SPRO
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the SAP Help Portal for documentation related to SCM and logical system configuration.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.