Psa Interface Checker Scary Mistake Fix May 2026

It happens. You clicked “Delete” on 200 configurations. Here is the recovery path:

When you see that red warning, follow this checklist. Do not click anything until step 4.

We could not simply "re-enter" the data because the time entries existed, but were detached. We needed to find out which project ID belonged to which time entry.

The Save: We utilized the audit_log table, which stores the state of records before the Interface Checker modifies them. psa interface checker scary mistake fix

SQL Restoration Script:

BEGIN TRANSACTION;
-- Create a temp table of the corrupted entry IDs
SELECT entry_id
INTO #corrupted_entries
FROM time_logs
WHERE project_id IS NULL
AND entry_date = CURRENT_DATE; -- Targeting only affected records
-- Restore the project_id from the audit log
UPDATE t
SET t.project_id = a.old_value::int
FROM time_logs t
JOIN audit_log a ON t.entry_id = a.record_id
JOIN #corrupted_entries c ON t.entry_id = c.entry_id
WHERE a.table_name = 'time_logs'
AND a.column_name = 'project_id'
AND a.action = 'UPDATE' -- The checker performed an update
AND a.changed_at > '2023-10-24 10:00:00'; -- After the patch deploy It happens
-- Verification
SELECT COUNT(*) FROM time_logs WHERE project_id IS NULL AND entry_date = CURRENT_DATE;
COMMIT TRANSACTION;

Result: 3,498 out of 3,500 records were successfully restored. The remaining 2 were manually reconciled by the operations team.

The PSA Interface Checker is a built-in diagnostic routine (often part of DiagBox) that verifies communication between:

A “scary mistake” usually means the checker reports: Result: 3,498 out of 3,500 records were successfully

Users panic because a bad interface can corrupt the BSI (Body Systems Interface) – the car’s central computer.