---
sourceDocument: Australia Build workflows
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/build-workflows

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia Build workflows

ft:clusterId :

    - crworkflow

bundleId :

    - crworkflow

workflow :

    - Creator


---

# Modify decision table structure in Workflow Studio

# Modify decision table structure in Workflow Studio {#ariaid-title1}

* Release version: Australia
* 
* Updated July 22, 2026
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 4 minutes to read

Modify the inputs or columns of a decision table in Workflow Studio to keep pace with changing business logic.

## Modify an input for a decision table {#ariaid-title2}

Modify an input by changing the label, modifying the type and associated properties, and changing the mandatory toggle.

### Before you begin

Role required: admin, decision_table_admin, or delegated developer permissions. For
more information, see [Delegate developers using
App Engine Studio](https://www.servicenow.com/docs/access?context=aes-app-dev-workflow&version=australia&pubname=australia-application-development&ft:locale=en-US).

### Procedure

1. Navigate to AllProcess AutomationWorkflow Studio.
2. On the homepage, select Decision tables.
3. Select a decision table.
4. Select the input to modify.
5. Modify the input.
   * To modify the label, select the label, provide a new name, and press Enter.
   * To change the input type, choose a different input type from the Type list.  
     Note:  
     The input type can be modified only if the input is not linked to a condition column.
   * To modify the input type properties, select the property field and update the value.
   {#edit-an-input__choices_tjx_qhj_vqb}
6. Select Save.

## Filter reference inputs and results in a decision table {#ariaid-title3}

Narrow down the list of results to only information that you need to see for Reference type input and result fields in decision tables in Workflow Studio.

### Before you begin

Role required: admin or decision_table_admin

### Procedure

1. Navigate to AllProcess AutomationWorkflow Studio.
2. On the homepage, select Decision tables.
3. Select a decision table.
4. Create a filter for an input or result.

   | Action | Description |
   | Create a filter for a Reference type input | 1. Select Add an input. 2. In the Label field, add a label for the input. For example, <kbd class="ph userinput">Reference input</kbd>. 3. In the Type field, select Reference. The Reference column appears and displays the Reference table. 4. In the Table field, select the table to reference. For example, <kbd class="ph userinput">sys_user</kbd>. {#filter-reference-inputs-results__ol_x1t_jb1_cyb} |
   | Create a filter for a Reference type result | 1. Select Add result column. 2. In the Result column label field, enter a name for the field. 3. In the Result type field, select Reference. 4. In the Result table field, select the table to reference. {#filter-reference-inputs-results__ol_l5c_121_cyb} |
   |-|-|

   {#filter-reference-inputs-results__choicetable_mgh_hb1_cyb}
5. Select Add reference filter.
6. Build a filter by adding conditions that contain a field, operator, and value.  
   You can build a more complex filter by selecting New condition set and adding more conditions with or or and to string them together.
7. Select Done.
8. **Optional:** Add a linked reference condition column with the filters you've created applied by selecting Add condition column in the Reference input row.
9. **Optional:** In the Data to evaluate section, select Reference record.  
   A filtered input filters the list of records in linked condition column cells where the data to evaluate is Reference record. A filtered result column filters the list of records in the corresponding result column cells.
10. Select Save.

## Update an existing reference filter {#ariaid-title4}

Make changes to an existing filter on Reference type inputs or results in decision tables in Workflow Studio.

### Before you begin

Role required: admin

### Procedure

1. Navigate to AllProcess AutomationWorkflow Studio.
2. On the homepage, select Decision tables.
3. Select a decision table.
4. Select the input or result to modify.
5. Point to the result column header, and select the Edit column properties icon (![Edit column properties icon]()).
6. Select Modify reference filter.
7. Make your changes and select Done.
8. Select Save.

## Delete an input from a decision table {#ariaid-title5}

Delete inputs that are no longer necessary from your decision table in Workflow Studio. Deleting an input also deletes any related condition columns.

### Before you begin

Deleting an input from a decision table can break a flow, playbook, or script passing data through the input. Because of this possibility, you should know where the decision table is used before deleting anything from it.

Role required: admin, decision_table_admin, or delegated developer permissions. For
more information, see [Delegate developers using
App Engine Studio](https://www.servicenow.com/docs/access?context=aes-app-dev-workflow&version=australia&pubname=australia-application-development&ft:locale=en-US).

### Procedure

1. Navigate to AllProcess AutomationWorkflow Studio.
2. On the homepage, select Decision tables.
3. Select a decision table.
4. At the end of the input row, select the Input menu options icon (![Input menu options icon.]()), and select Delete.
5. Select Save.

## Modify a decision table condition column {#ariaid-title6}

Modify a condition column by renaming the label, editing the description, or updating the input type or default operator of your decision table in Workflow Studio.

### Before you begin

Role required: admin, decision_table_admin, or delegated developer permissions. For
more information, see [Delegate developers using
App Engine Studio](https://www.servicenow.com/docs/access?context=aes-app-dev-workflow&version=australia&pubname=australia-application-development&ft:locale=en-US).

### Procedure

1. Navigate to AllProcess AutomationWorkflow Studio.
2. On the homepage, select Decision tables.
3. Select a decision table.
4. Point to the condition column header and select the Edit column properties icon (![Edit icon.]()).
5. Make your changes and select Done.  
   Note:  
   If you have an input of the type <var class="keyword varname">Choice</var>, and you switch the input type to any other type, that action deletes all values from the condition column.
6. Select Save.

## Modify a decision table result column {#ariaid-title7}

Change the data that a decision evaluates by changing the source table for that decision table in Workflow Studio.

### Before you begin

Role required: admin, decision_table_admin, delegated developer permissions. For more
information, see [Delegate developers using
App Engine Studio](https://www.servicenow.com/docs/access?context=aes-app-dev-workflow&version=australia&pubname=australia-application-development&ft:locale=en-US).

### Procedure

1. Navigate to AllProcess AutomationWorkflow Studio.
2. On the homepage, select Decision tables.
3. Select a decision table.
4. Point to the results column header and select the Edit column properties icon (![Edit icon.]()).
5. Replace the existing result table with a different source table.  
   Note:  
   Changing the result table deletes the current decision table results values.
6. Select Done.
7. Select Save.

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