How To Fix CNV20201002 - No conversion routine available for subobject of object &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 002

• Message text: No conversion routine available for subobject of object &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20201002 - No conversion routine available for subobject of object &1 ?

  The SAP error message CNV20201002 indicates that there is no conversion routine available for a specific subobject of an object in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  This error typically arises during data migration when the system attempts to convert data from one format to another, but it cannot find a defined conversion routine for the specified subobject. This can happen due to several reasons:
  
  Missing Conversion Routines: The required conversion routines for the specific data object or subobject have not been defined or are not available in the system.
  Incorrect Configuration: The configuration settings for the migration or conversion process may be incorrect, leading to the system not being able to locate the appropriate routines.
  Data Model Changes: If there have been changes in the data model (for example, during an upgrade or migration to S/4HANA), the existing routines may no longer be valid or applicable.
  
  Solution:
  To resolve the error CNV20201002, you can take the following steps:
  
  
  Check for Available Conversion Routines:
  
  Verify if the conversion routines for the specified object and subobject exist in the system. You can do this by checking the relevant configuration or migration settings.
  
  
  
  Define Missing Routines:
  
  If the required conversion routines are missing, you may need to create or define them. This typically involves using transaction codes like SE37 (Function Builder) to create a new function module that implements the necessary conversion logic.
  
  
  
  Review Migration Settings:
  
  Ensure that the migration settings are correctly configured. Check the mapping and transformation rules to ensure they align with the data structure of the source and target systems.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific migration or conversion process you are using. There may be specific instructions or updates that address this issue.
  
  
  
  Check for SAP Notes:
  
  Look for any relevant SAP Notes that might address this error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  
  
  
  Testing:
  
  After making changes, perform a test migration to ensure that the error is resolved and that data is being converted correctly.
  
  
  
  Related Information:
  
  SAP Notes: Search for SAP Notes related to the CNV20201002 error for any specific patches or updates.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific migration tool you are using for additional guidance.
  Community Forums: Consider checking SAP Community forums or other user groups for discussions related to this error, as other users may have encountered and resolved similar issues.
  
  If the problem persists after following these steps, it may be beneficial to engage with SAP support for further assistance.