How To Fix UAS048 - Data loss - column &1 of type &2 still contains &3 data records

SAP Error Message - Details

• Message type: E = Error

• Message class: UAS -

• Message number: 048

• Message text: Data loss - column &1 of type &2 still contains &3 data records

What causes this issue?

You want to delete column &v1& of type &v2&. However, this column
contains &v3& data records that will be irretrievably lost during the
next generation.

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?

Check carefully whether you really want to make this deletion. If not
include column &v1& in the type again or cancel structure maintenance
without saving.

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 UAS048 - Data loss - column &1 of type &2 still contains &3 data records ?

  The SAP error message UAS048 indicates that there is a data loss issue related to a specific column in a database table. This error typically arises during data processing or data migration activities, where the system detects that a column of a certain type still contains data records that are not compatible with the expected data type or format.
  Cause:
  The error message UAS048 is triggered when:
  
  A column in a database table is expected to contain a certain type of data (e.g., numeric, character, date) but still has records that do not conform to this type.
  This can happen during data migration, data uploads, or when data is being transformed and the transformation rules are not correctly applied.
  It may also occur if there are inconsistencies in the data model or if the data was manually altered in a way that violates the constraints of the column.
  
  Solution:
  To resolve the UAS048 error, you can follow these steps:
  
  
  Identify the Column and Data Type: Check the error message for the specific column name (&1) and its data type (&2). This will help you understand which column is causing the issue.
  
  
  Review Data Records: Query the database table to identify the records in the specified column that are causing the issue. You can use SQL queries to filter out the records that do not match the expected data type.
  
  
  Data Cleansing: Once you have identified the problematic records, you will need to clean or transform the data to ensure that all entries in the column conform to the expected data type. This may involve:
  
  Converting data types (e.g., changing strings to numbers).
  Removing or correcting invalid entries.
  Ensuring that any data transformations applied during migration are correctly implemented.
  
  
  
  Re-run the Process: After cleansing the data, re-run the process that triggered the error to see if the issue has been resolved.
  
  
  Check Data Model: If the error persists, review the data model and ensure that the definitions of the columns are correct and that there are no discrepancies between the source and target systems.
  
  
  Consult Documentation: If you are unsure about the data types or constraints, refer to the SAP documentation or data model specifications for guidance.
  
  
  Related Information:
  
  Data Migration Tools: If you are using tools like SAP Data Services or LSMW (Legacy System Migration Workbench), ensure that the mappings and transformations are correctly defined.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Testing: Always test data migrations in a development or test environment before applying changes to production to avoid data integrity issues.
  
  By following these steps, you should be able to identify and resolve the UAS048 error effectively.