How To Fix CNV808 - Table &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 808

• Message text: Table &1 already exists

What causes this issue?

Table &V1& has already been considered (either as reloadable or as
non-reloadable table).

System Response

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

How to fix this error?

Find the table name under the reloadable or non-reloadable tables.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV808 - Table &1 already exists ?

  The SAP error message CNV808 "Table &1 already exists" typically occurs during data migration or conversion processes, particularly when using SAP's Data Migration tools or during the execution of a conversion program. This error indicates that the system is attempting to create a database table that already exists in the database.
  Cause:
  
  Table Already Exists: The most straightforward cause is that the table you are trying to create already exists in the database. This can happen if the migration process was partially completed or if the table was created in a previous run.
  Incorrect Migration Setup: The migration setup might not be correctly configured, leading to attempts to create tables that should not be created again.
  Multiple Runs: If the migration process is run multiple times without proper cleanup, it can lead to this error.
  
  Solution:
  
  Check for Existing Tables: Before running the migration or conversion program, check if the table already exists in the database. You can do this using transaction SE11 (Data Dictionary) or SE16 (Data Browser).
  Drop the Existing Table: If the table is not needed or if you are sure that it should be recreated, you can drop the existing table using the appropriate SQL command or through the Data Dictionary. Be cautious with this approach, as it will delete all data in the table.
  Adjust Migration Settings: Review the migration settings to ensure that the process is set up correctly. This may involve checking configuration files or parameters that dictate how the migration should handle existing tables.
  Use a Different Table Name: If applicable, modify the migration script or configuration to use a different table name to avoid conflicts.
  Consult Documentation: Refer to the SAP documentation related to the specific migration tool or process you are using for any additional steps or considerations.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE16 (Data Browser), and SE38 (ABAP Program Execution) for troubleshooting.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific migration tool you are using.
  Logs and Traces: Review logs and traces generated during the migration process for more detailed error messages or warnings that could provide additional context.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support or consulting with a technical expert who specializes in SAP migrations.