hi all, can I use neural forecast for hierarchical monthly sales forecasting? I have data like that:

yes

great could you please share with me python code to prepare my data for neuralforecast or link of this code

Hello! You can look at our tutorial on using neuralforecast and then performing reconciliation with hierarchicalforecast here.

I have an issue, when i prepare data and aggregation i got only few rows for train an test because i have monthly sales i dont have daily sales how to fix that

Make sure your

unique_id

column has the same amount of unique values as the number of unique time series that you have. Otherwise, not much you can do with a limited dataset. You could try reducing the horizon, or as the exception says, use a smaller input size.