How To Fix CNV20551028 - LGNUM=& is defined in T300; however assignment in T320 is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20551 - message for package 20551 (company code delete)

• Message number: 028

• Message text: LGNUM=& is defined in T300; however assignment in T320 is missing

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20551028 - LGNUM=& is defined in T300; however assignment in T320 is missing ?

  The SAP error message CNV20551028 indicates that there is an issue with the assignment of a logical system number (LGNUM) in the SAP system. Specifically, it states that the logical system number is defined in table T300, but there is a missing assignment in table T320. This error typically arises during data migration or system conversion processes, particularly when using SAP's Conversion Tools.
  Cause:
  
  Missing Assignment: The logical system number (LGNUM) is defined in T300, but there is no corresponding entry in T320 that links this logical system to a specific client or configuration.
  Configuration Issues: The logical system may not have been properly configured or assigned in the system, leading to inconsistencies between the tables.
  Data Migration Issues: If you are performing a data migration, the logical system may not have been correctly set up in the target system.
  
  Solution:
  
  
  Check T300 and T320:
  
  Use transaction SE11 or SE16 to view the contents of tables T300 and T320.
  Ensure that the logical system number (LGNUM) exists in T300.
  Verify that there is a corresponding entry in T320 for the logical system number.
  
  
  
  Create Missing Assignment:
  
  If the assignment in T320 is missing, you will need to create it. This typically involves:
  
  Identifying the correct client and configuration that the logical system should be assigned to.
  Adding the necessary entry in T320 to establish the relationship.
  
  
  
  
  
  Check Configuration:
  
  Review the configuration settings for logical systems in your SAP system. Ensure that all logical systems are properly defined and assigned.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration or conversion process you are performing. There may be specific steps or prerequisites that need to be followed.
  
  
  
  Use SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional guidance.
  
  
  
  Related Information:
  
  T300: This table contains the definitions of logical systems in the SAP system.
  T320: This table is used to maintain the assignments of logical systems to clients and other configurations.
  Data Migration: If you are performing a data migration, ensure that all necessary configurations and mappings are in place before starting the migration process.
  SAP Support: If you are unable to resolve the issue, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify and resolve the issue related to the CNV20551028 error message in your SAP system.