When invoked without further parameter, this command lists the names of all short pseudonym columns that refer to a Castor study. The values in these columns correspond with Castor record IDs for the corresponding participant.
When invoked without further parameters, this command lists the names of all short pseudonym columns that refer to a Castor study. This means that the values in the listed columns are the Castor record IDs for the corresponding participant.
The command accepts an optional `--imported-only` switch. If specified, the command outputs only those columns that are processed when importing data from Castor into PEP. These are the column names that can be passed to the [`castor list-import-columns`](#castor-list-import-columns) and [`castor create-import-columns`](castor-create-import-columns) subcommands.
