Where to put `if`, shallow or deeper?

example.rb

# Lets say we have a Book model and we want to fetch some data about the book from an API and store it in the model.
# A Book needs an identifier before it can be fetched from the API. Not all books have an identifier, e.g. it may not have been entered yet.

# Do we silently return in FetchFromApi when the book has no identifer:

class FetchFromApi
  def call(book)
    return unless record.identifier.present?
    
    # do API call and update record
  end
end

# and thus we can pass any book, regardless of it having an identifier or not:

FetchFromApi.call(book)

# Or do we noisely raise:

class FetchFromApi
  def call(book)
    raise(ArgumentError, "Book does not have an identifier") unless book.identifier.present?
    
    # do API call and update book
  end
end

# And only call FetchFromApi if the book has an identifier:

FetchFromApi.call(book) if book.identifier.present?