> ## Documentation Index > Fetch the complete documentation index at: https://docs.flowforma.com/llms.txt > Use this file to discover all available pages before exploring further. # Repeating table - identify unique RT column > Identify unique RT column checks whether an answer in a repeating table column is unique and returns a configurable value to another column. This rule allows you to identify if an answer in a repeating table column is unique to that column. The rule returns a result to another column, and you can decide what value is returned depending on whether the answer is unique or not. Repeating table identify unique RT column rule configuration ## Title The first part of the business rule lets you define a **title** for your rule and select the event on which it operates. The default title is the standard **FlowForma** rule name; change it by deleting the text and entering your own. In the **event** field you determine when the rule is executed. For a flow this can occur when the form is loaded, started, or completed. For a step this can occur when the step is started, saved, or completed. For questions it can occur when the question is updated. ## Rule condition(s) The second part of the business rule lets you set conditions. These are not required, but if entered they control when the rule is executed in relation to other items in the form. ## Rule actions * **Select repeating table**: select the repeating table where you want to apply this rule. * **Select question to check**: select the column in the repeating table that is to be checked by the rule. * **Selection identifier question**: select the question you want to return the outcome of the check to. * **Value for unique entries**: enter the value you want to return if the answer is unique (e.g. Yes or 0) * **Value for not unique entries**: enter the value you want to return if the answer is not unique (e.g. No or 1) - **Stop execution**: if stop execution is enabled and this rule is executed, no other rules are executed. - **Enabled**: rules aren't saved to a list like questions and steps are, so if you want to stop a rule executing without deleting it, toggle this option to enable or disable the rule. - **Enable audit**: if checked, a record is added to the audit trail when this rule is executed. This option is available when the Compliance feature pack is activated.