How To Fix FDT_EXPRESSIONS128 - Columns must be adapted to change of result data object &1

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 128

• Message text: Columns must be adapted to change of result data object &1

What causes this issue?

Data object &v1& was assigned to decision table as a result data object.
The system should have automatically added result columns to the
decision table at the time of this assignment.
In the meantime, the structure of the result data object &v1& seems to
have changed, so that either new fields were added or fields were
removed. The result columns of the decision table do not yet reflect
this change.

System Response

The active version of the decision table (if any) should still be
executable if new fields were added to data object &v1&. It cannot
return values for new fields like this because none have been maintained
so far.
If a field was removed from data object &v1&, the maintained result
values of this field will no longer be returned at runtime.

How to fix this error?

Adapt the structure of the decision table by entering it in change mode.
The result columns of the decision table will be adapted automatically.
If fields were added, you will have to enter result values/expressions
for them.
Then save and activate the decision table.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS128 - Columns must be adapted to change of result data object &1 ?

  The SAP error message FDT_EXPRESSIONS128 indicates that there is a mismatch between the columns defined in a data object and the result data object that is being used in a formula or expression. This typically occurs in the context of SAP's Flexible Data Import (FDI) or similar data processing scenarios where the structure of the data being processed has changed.
  Cause:
  
  Data Structure Change: The structure of the result data object has been modified (e.g., columns added, removed, or renamed) but the expressions or formulas that reference this data object have not been updated accordingly.
  Inconsistent Data Types: The data types of the columns in the result data object may not match the expected types defined in the expressions.
  Missing Columns: The expressions may be referencing columns that no longer exist in the result data object.
  
  Solution:
  
  Review Data Object Structure: Check the structure of the result data object and ensure that it matches the expected structure used in the expressions. You can do this by comparing the current definition of the data object with the one used in the expressions.
  Update Expressions: Modify the expressions to align with the current structure of the result data object. This may involve:
  
  Adding new columns to the expressions if new columns have been added to the data object.
  Removing references to columns that have been deleted.
  Changing data types in the expressions to match the current data types of the columns.
  
  
  Test Changes: After making the necessary adjustments, test the expressions to ensure that they work correctly with the updated data object.
  Documentation: Document any changes made to the data structure and expressions for future reference and to avoid similar issues.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for Flexible Data Import or the specific module you are working with for detailed guidelines on data object structures and expressions.
  SAP Community: Engage with the SAP Community forums to seek advice from other users who may have encountered similar issues.
  Debugging Tools: Utilize SAP debugging tools to trace the execution of the expressions and identify where the mismatch occurs.
  
  By following these steps, you should be able to resolve the error message FDT_EXPRESSIONS128 and ensure that your data processing works as intended.