Quantum DSC generally requires each respondent to have a serial number. If the standard Respondent.Serial system variable is present, Metadata Model to Quantum automatically uses this as the serial number variable. However, if you are working with data that did not originate in one of the UNICOM Intelligence products, there might not be a Respondent.Serial system variable. When you open one of these files, Metadata Model to Quantum opens this dialog, so that you can select the variable that stores the respondents' serial numbers. If there is no suitable variable in the file, you will not be able to use it with Metadata Model to Quantum.

Select the variable that stores the serial number and then click OK. This variable will not be shown in the Metadata Model to Quantum main window. However, after you run the Allocate Cols and Punches command, the columns that are used to store the serial number field will be shown at the top of the main window.