How To Fix CX644 - Database table already contains entries

SAP Error Message - Details

• Message type: E = Error

• Message class: CX - Nachrichten für Konfigurationsprozess

• Message number: 644

• Message text: Database table already contains entries

What causes this issue?

You can only transfer the contents of a variant table to a database
table if the database table is empty in the current client.

System Response

Database table &V1& is not empty, so you cannot transfer the contents
of the variant table.

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 CX644 - Database table already contains entries ?

  The SAP error message CX644, which states "Database table already contains entries," typically occurs when there is an attempt to insert data into a database table that already has existing entries, and the operation is not allowed due to constraints such as primary keys or unique indexes.
  Cause:
  
  Primary Key Violation: The table has a primary key defined, and the insert operation is trying to add a record with a key that already exists.
  Unique Constraint Violation: Similar to primary keys, if there are unique constraints on certain fields, trying to insert a record with duplicate values in those fields will trigger this error.
  Data Consistency Issues: The application logic may be attempting to insert data that should not be duplicated based on business rules.
  Incorrect Logic in Custom Code: If there is custom ABAP code or enhancements that handle data insertion, there may be logic errors leading to attempts to insert duplicate records.
  
  Solution:
  
  Check Existing Data: Before performing the insert operation, check if the data already exists in the table. You can do this by querying the table with the relevant keys or unique fields.
  Modify Insert Logic: If the data already exists, you may need to modify your logic to either update the existing record instead of inserting a new one or skip the insert operation altogether.
  Review Constraints: Review the table structure and constraints to understand why the insert is failing. This may involve checking primary keys and unique indexes.
  Error Handling: Implement error handling in your code to gracefully manage situations where an insert fails due to existing entries.
  Data Cleanup: If the existing data is not needed, consider cleaning up the table to remove duplicates or unnecessary entries, but ensure this aligns with business requirements.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary) to view the table structure and constraints.
  Debugging: If the error is occurring in custom code, use the ABAP debugger to trace the execution and identify where the insert is being attempted.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP documentation for best practices on data handling and database operations to avoid such errors in the future.
  
  By following these steps, you should be able to identify the root cause of the CX644 error and implement a suitable solution.