SDK Debug Log
From the Logs tab in Vault (Admin > Logs > Developer Logs), you can view the Debug Log. The debug log captures custom Vault Java SDK code execution details and Vault messages at the user-level. This log is not always on by default. To capture data in the debug log, a Vault Admin must set up a debug log session for a particular user. A user can have only one (1) debug log configured for them at a time, and a Vault can have up to 20 users with debug log sessions configured.
Debug logs expire after 30 days. At the end of 30 days, Vault deletes the debug log and all log files.
By default, the Vault Owner and System Admin security profiles have permission to view the debug log and set up debug log sessions for a particular user.
Learn more about the debug log.