Diagnostics
T410
indicator over a book or volume view
T410
Indicators need a single number series, not a whole order-book or volume view. Pick one field or measurement of the view first.
Failing example
script "example"
data book = subscribe(data.book)
on book.update { let value = ta.ema(book.bids(), 3) }Corrected example
script "fixed"
data chart = subscribe(data.ohlcv)
data book = subscribe(data.book)
on chart.update { let average = ta.ema(chart.close, 3)
let bid = book.bestBid() }