A site ID is a unique identifier that is used to validate your license, as well as distinguishing each running instance of Issuetrak from all others. Additionally, site IDs are also used as a mechanism to distinguish production sites from test sites.
You will be prompted to enter a numeric site ID when you deploy a new instance of Issuetrak or upgrade an existing instance from a legacy version. If you do not know your site ID, then please reach out to Issuetrak Support so that we can provide it to you.
If you have already upgraded to a recent version of Issuetrak, then you can find your site ID in your site by navigating to the License screen or clicking on the question mark towards the top-right area of the screen and then choosing About Issuetrak.