Cloud function works as http, but doesn’t work as a scheduled function

I have a daily scheduled function as follows:

@firestore_fn.on_document_created limit on firebase cloud functions(2nd gen)

I am a beginner. and I am sorry that my English is not good.

@firestore_fn.on_document_created limit on firebase cloud functions(2nd gen)

I am a beginner. and I am sorry that my English is not good.

Firebase functions: Extend Cloud Firestore with Cloud Functions

I’m reading the documentation of Extend Cloud Firestore with Cloud Functions link.