Unique ID Field
This layout tool displays the unique ID (GUID) of the current record. This is the unique ID of the contact, company, group or opportunity record used internally by Act! to identify the record.
This tool is particularly useful when importing or exporting records because the unique ID can serve as a unique record identifier. With the help of this tool, it is now in a field accessible to the import/export wizard.
If you export and reimport records, it can also be used to check duplicate records after an import.
Make sure the field you assign the unique ID to is at least 36 character long.
See this video on how to set it up.