unique constraint violation in SQL like persistance in ScheduledCommand table

**Describe the bug**
After some time DB keeps complaining about duplicate key value violations in ScheduledCommand table.

2024-12-22 17:34:51.017 UTC [20373] ERROR: duplicate key value violates unique constraint "IX_ScheduledCommand_CommandName_Data"
2024-12-22 17:34:51.017 UTC [20373] DETAIL: Key ("CommandName", "Data")=(ProcessWorkflow, b0d7c172-faf6-4cce-894c-eec895c9859f) already exists.
2024-12-22 17:34:51.017 UTC [20373] STATEMENT: INSERT INTO wfc."ScheduledCommand" ("CommandName", "Data", "ExecuteTime")

**To Reproduce**
Steps to reproduce the behavior:
1. Use a SQLite or postgreSQL as persistence
2. Create a complex workflow with external activity.
3. Use it for some time.

**Expected behavior**
No issues.

**Additional context**
Add any other context about the problem here.