How To Fix CNV_20800144 - Old customer &1 does not exist (in table KNA1)

CNV_20800144 - Overview

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 144

• Message text: Old customer &1 does not exist (in table KNA1)

Self-Explanatory Message

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CNV_20800144 - Details

• The SAP error message CNV_20800144 indicates that the system is unable to find a customer record in the KNA1 table (which stores general data for customers) for the specified customer number. This error typically arises during data migration or conversion processes, especially when using SAP's data migration tools.
  
  Cause:
  
  
  Missing Customer Data: The customer number referenced in the error does not exist in the KNA1 table. This could be due to:
  
  The customer was never created in the system.
  The customer was deleted or archived.
  There was an error during the data migration process that caused the customer data not to be transferred correctly.
  
  
  
  Incorrect Mapping: If you are migrating data from another system, there may be an issue with how customer numbers are mapped between the source and target systems.
  
  
  Data Consistency Issues: There may be inconsistencies in the data being migrated, such as missing dependencies or related records.
  
  
  
  Solution:
  
  
  Verify Customer Existence: Check the KNA1 table to