How To Fix CNV20201216 - &1: Shifting=&2, Tracking=&3, Accepting_Duplicate_Keys=&4

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 216

• Message text: &1: Shifting=&2, Tracking=&3, Accepting_Duplicate_Keys=&4

What causes this issue?

The following settings were stored for the number range object &V1&:
Shifting = &V2&
Tracking = &V3&
Accepting_Duplicate_Keys (write for tracking table) = &V4&

System Response

Information

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20201216 - &1: Shifting=&2, Tracking=&3, Accepting_Duplicate_Keys=&4 ?

  The SAP error message CNV20201216 is related to data migration processes, particularly in the context of SAP S/4HANA migrations. This error typically arises during the execution of a data migration project, especially when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  The error message CNV20201216 indicates issues with the data being processed during the migration. The parameters in the error message provide specific details:
  
  Shifting: This usually refers to the data being shifted or moved during the migration process.
  Tracking: This indicates how the data is being tracked or monitored during the migration.
  Accepting_Duplicate_Keys: This parameter indicates whether the migration process is set to accept duplicate keys in the data being migrated.
  
  The error can occur due to:
  
  Duplicate Keys: The presence of duplicate keys in the source data that violate the uniqueness constraints in the target system.
  Data Integrity Issues: Problems with the integrity of the data being migrated, such as missing references or invalid data formats.
  Configuration Settings: Incorrect settings in the migration cockpit or tools that do not allow for the handling of duplicates or other data issues.
  
  Solution:
  To resolve the CNV20201216 error, consider the following steps:
  
  
  Check for Duplicate Keys:
  
  Review the source data for any duplicate keys that may be causing the issue. You can use data profiling tools or SQL queries to identify duplicates.
  If duplicates are found, decide whether to remove them, merge them, or adjust the migration settings to handle them appropriately.
  
  
  
  Adjust Migration Settings:
  
  If your migration process allows for duplicate keys, ensure that the configuration settings in the migration cockpit are set to accept duplicates if that is acceptable for your business case.
  Review the migration strategy and adjust it to handle data integrity issues.
  
  
  
  Data Cleansing:
  
  Perform data cleansing on the source data to ensure that it meets the requirements of the target system. This may involve correcting data formats, removing invalid entries, or ensuring that all necessary references are intact.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation related to the specific migration tool you are using. There may be specific guidelines or best practices for handling such errors.
  
  
  
  Testing:
  
  After making adjustments, conduct a test migration with a smaller dataset to ensure that the changes resolve the issue before proceeding with the full migration.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who specializes in data migration.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide insights into handling data migration errors.
  Community Forums: Engage with the SAP Community or other forums where professionals discuss similar issues and solutions.
  
  By following these steps, you should be able to identify the root cause of the CNV20201216 error and implement a suitable solution.