How To Fix DT831 - Change in structure of field &

SAP Error Message - Details

• Message type: E = Error

• Message class: DT - Table activation (incl. indexes)

• Message number: 831

• Message text: Change in structure of field &

What causes this issue?

The field occurs in both versions of the table. However, the type
definition for the field was changed.

System Response

The SAP version is adopted for the proposal.

How to fix this error?

Check whether changing the structure may result in loss of data.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DT831 - Change in structure of field & ?

  The SAP error message DT831, which states "Change in structure of field &," typically occurs when there is a mismatch in the data structure of a field in a database table or a data element. This can happen due to various reasons, such as changes in the underlying data model, updates to the database schema, or modifications in the data dictionary.
  Cause:
  
  Data Dictionary Changes: If there have been changes to the data dictionary (e.g., changes in field length, data type, or structure) that are not reflected in the program or report that is trying to access that field.
  Inconsistent Data Model: If the data model has been altered (e.g., adding or removing fields) and the program has not been updated accordingly.
  Transport Issues: If changes were transported from one system to another (e.g., from development to production) and the transport did not include all necessary objects or was not executed correctly.
  
  Solution:
  
  Check Data Dictionary: Review the data dictionary (SE11) for the relevant table or data element to ensure that the structure is as expected. Look for any recent changes that may have been made.
  Update Programs: If the structure of the field has changed, update any ABAP programs, reports, or function modules that reference this field to align with the new structure.
  Re-transport Objects: If the issue is due to a transport problem, ensure that all relevant objects are included in the transport request and re-transport them to the target system.
  Activate Objects: Sometimes, simply activating the affected objects in the ABAP Workbench (SE80) can resolve the issue.
  Check for Dependencies: Ensure that any dependent objects (like views, search helps, etc.) are also updated to reflect the changes in the data structure.
  
  Related Information:
  
  Transaction Codes: Use SE11 (Data Dictionary), SE80 (Object Navigator), and SE37 (Function Module) to investigate and modify the relevant objects.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: If the error occurs during runtime, consider using the ABAP debugger to trace where the error is being triggered and gather more context about the issue.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP Basis or ABAP development team for further assistance.