A data map is a structured analysis of the target company's sources of data which could be potentially relevant to a legal investigation. During an eDiscovery project, the identification stage is about gaining a complete understanding of this data map and how it relates to the organizational (org) chart. Some companies will have a data map, an org chart and specific data retention policies already prepared and in place. These practices can vary between companies and even between departments. When litigation becomes imminent, you may be in a rush to send out a legal hold to prevent intentional or unintended destruction of data. Your eDiscovery workflow may follow a specific, defined order, or more commonly your discovery plan may allow you to come back for second and third rounds of data identification. It is a best practice to put together an accurate data map and continue to revisit it, thereby adding and removing data sources as you gain a more thorough understanding of the data and formally define the scope of the investigation.