Google calendar and Notion 2way sync

I am following the manual for syncing Google Calendar and Notion.
Something seems to be wrong with the settings. What should I do?
This is my first time using it. So I have a beginner question.

Hi @ldspoison ,

From the screenshot that you shared, it appears that you mapped the Database ID output field of the Notion module as input for the Google calendar. This is not an expected input. The Event ID input field is expecting an Event ID, for that you need to search the Event first and then if found, map the Event ID as input for the Update an Event module.