A [[Invantive Studio/Repository/Concepts/Code Domain|code domain]] with its values is defined as follows: - Open the application in the tree and select its folder "Codes". - Choose [[Invantive Studio/Ribbon/Add|"Add"]], enter the code of the domain and its description, and choose [[Invantive Studio/Ribbon/Save|"Save"]]. - Open the new code and select its folder "Values". - Add each allowed value with [[Invantive Studio/Ribbon/Add|"Add"]], with its code and description, and choose [[Invantive Studio/Ribbon/Save|"Save"]]. A column that holds a value of the domain ends in the code column postfix of the application, usually `_ind`.