How To Fix CNV_CMIS_M311 - Entry &1 is present in table &2 and is overwritten

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CMIS_M - Message class for CMIS Migration

• Message number: 311

• Message text: Entry &1 is present in table &2 and is overwritten

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CMIS_M311 - Entry &1 is present in table &2 and is overwritten ?

  The SAP error message CNV_CMIS_M311 indicates that there is a conflict during a data migration or conversion process. Specifically, it means that an entry identified by &1 is already present in the specified table &2, and the system is attempting to overwrite it. This can occur in various scenarios, particularly during data migration projects using SAP's Conversion Management Information System (CMIS).
  Cause:
  
  Duplicate Entries: The most common cause is that the data being imported or migrated contains duplicate entries that conflict with existing records in the target table.
  Incorrect Mapping: There may be an issue with the mapping of source data to the target structure, leading to attempts to insert records that already exist.
  Data Quality Issues: The source data may have inconsistencies or duplicates that were not addressed prior to migration.
  Configuration Issues: There may be configuration settings in the migration tool that are not set correctly, leading to overwriting of existing data.
  
  Solution:
  
  Identify Duplicates: Check the source data for duplicates and resolve them before migration. This can involve deduplication processes or data cleansing.
  Review Mapping: Ensure that the mapping of source fields to target fields is correct and that it does not lead to conflicts.
  Adjust Migration Settings: If applicable, adjust the settings in the migration tool to handle duplicates appropriately (e.g., skip, update, or log).
  Data Validation: Implement data validation checks before migration to ensure that the data being migrated does not conflict with existing records.
  Consult Logs: Review the migration logs for additional details on the error and to identify the specific records causing the conflict.
  Manual Intervention: In some cases, it may be necessary to manually resolve conflicts by either deleting or updating existing records in the target table.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary) to check the structure of the tables involved, and SE38 or SA38 to run migration programs.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for data migration.
  Documentation: Review SAP documentation related to the specific migration tool or process you are using, as it may provide insights into handling such errors.
  
  By addressing the underlying causes and following the suggested solutions, you should be able to resolve the CNV_CMIS_M311 error and successfully complete your data migration.