3743331 - Error FDT_EXPRESSIONS180 when Adding a New Column in Decision Tables in Output Parameter Determination

When attempting to add a new condition or result column in a decision table within the Output Parameter Determination app, although the required field is available under Context Data Objects, selecting it results in the following error: “Column <Object Name> is already used as a column in the decision table” (Message no. FDT_EXPRESSIONS180). As a result, the column cannot be added, and the change is not saved.

SAP S/4HANA Cloud Public Edition

1. Open the Output Parameter Determination app in the Customizing client
2. Select a relevant Output Type
3. Select a Determination Step (e.g., Form Template)
4. Click “Edit”
5. Navigate to “Table Settings”
6. In the popup, go to “Condition Columns” or “Result Columns”
7. Click “Insert Column”
8. Choose “Context Data Objects”
9. Select any available field
10. Confirm selection

The system raises error FDT_EXPRESSIONS180.

Within decision tables, the framework does not allow assigning the same object more than once.

This restriction applies across all column types, meaning a field already used as a condition column cannot be reused as a result column, and vice versa.

If the system detects that the selected field is already assigned (even indirectly), it triggers error FDT_EXPRESSIONS180.

The system behavior requires that each object be used only once within a decision table. The existing configuration should be reviewed to identify whether the same field is already assigned in any column, and if so, the duplicate assignment must be removed before attempting to add it again.

The column can still be added successfully by clicking directly on the field name instead of selecting the checkbox in the selection list. If the issue continues, further validation of the table configuration may be required.

4.3.3.2.1 Adding a New Column to a Decision Table - 1LQ Set Up Guide

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