LDAP Synchronization is an asynchronous task managed by the Archer Job Engine . According to the Archer Installation and Troubleshooting guide, all tasks that are processed by the background Job Engine- including Recalculations, Notifications, and LDAP Syncs-capture their detailed execution data and error stack traces in the Job Framework log files .
These logs are typically found on the Services server in the \Logs directory (e.g., Archer.JobFramework.log).
When an LDAP sync fails (perhaps due to a service account lockout or a network timeout reaching the Domain Controller), the error will not appear in the Configuration Service (Option D), which only handles ACP settings, nor the Queuing Service (Option C), which only manages the "hand-off" of tasks. The Job Framework log is the granular technical record that administrators must consult to identify the specific LDAP error codes (like "52e" for invalid credentials) returned by the directory server.