How To Fix SCDT_MPNG1027 - Source table &1, field &2: Possible data loss in distribution

SAP Error Message - Details

• Message type: E = Error

• Message class: SCDT_MPNG1 - Message Class for the Function Module scdt_mapping_check

• Message number: 027

• Message text: Source table &1, field &2: Possible data loss in distribution

What causes this issue?

The field &V2& in the source table &V1& is longer than the assigned
target field &V3&. The Customizing Distribution converts the contents of
the source field into the format of the target field (by ABAP MOV E).
If the source and target fields are of type CHAR (character string), the
Customizing Distribution does not distribute the end of the source
field. This can cause data loss.
If the source and target fields are of other types, the conversion and
the Customizing Distribution can fail.

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 whether you can use another target field. Ensure that truncating
the contents will not cause problems (e.g. in text fields).

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 SCDT_MPNG1027 - Source table &1, field &2: Possible data loss in distribution ?

  The SAP error message SCDT_MPNG1027 indicates a potential data loss issue during the distribution of data from a source table to a target table. This typically occurs in the context of data transfer processes, such as those involving SAP Data Services or SAP BW (Business Warehouse).
  Cause:
  The error message is triggered when there is a mismatch between the data types or lengths of the fields in the source table and the target table. Specifically, it suggests that the data being transferred from the source field (indicated by &2) in the source table (indicated by &1) may not fit into the corresponding field in the target table, leading to potential data truncation or loss.
  Solution:
  To resolve this issue, you can take the following steps:
  
  
  Check Data Types and Lengths:
  
  Compare the data types and lengths of the fields in the source and target tables. Ensure that they are compatible. For example, if the source field is a VARCHAR(50) and the target field is a VARCHAR(30), you may encounter this error.
  
  
  
  Adjust Target Table Structure:
  
  If possible, modify the target table to accommodate the data from the source table. This may involve increasing the length of the target field or changing its data type to match the source.
  
  
  
  Data Transformation:
  
  If changing the target table structure is not feasible, consider implementing data transformation logic to truncate or convert the data appropriately before it is loaded into the target table.
  
  
  
  Review Data Mapping:
  
  Review the data mapping configuration in your data transfer process. Ensure that the mappings are correctly defined and that any necessary transformations are applied.
  
  
  
  Test with Sample Data:
  
  Before running the full data load, test the process with a small sample of data to ensure that the changes resolve the issue without causing data loss.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or support resources for specific guidance related to your version of SAP and the tools you are using.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Data Services/BW Documentation: Review the documentation for SAP Data Services or SAP BW for best practices on data modeling and transfer processes.
  Error Logs: Analyze error logs for additional details that may help identify the root cause of the issue.
  
  By following these steps, you should be able to address the SCDT_MPNG1027 error and ensure that your data transfer processes run smoothly without data loss.