When most of your products have more than 12 months sales history, you can use the seasonality to estimate the spike. Given a seasonal product, the forecasting algorithm puts more weight on sales 12 months ago and therefore accounts for the increase in sales (if any) of each particular product.
There are three methods to set variants to use a seasonal forecast:
- Account-wide as the default forecasting method
- Use Bulk Actions to apply seasonal forecasting to a group of variants
- Individually for one variant at a time using the Details dialog
Set seasonal forecast to be used account-side by default
To set seasonal forecasting as the default method used to calculate customer demand, go to Account > Settings
> Forecast and select ‘Products are seasonal by default’.
Note: Using this approach is best when all or most variants are seasonal. If a minority of variants in your store are not seasonal, then disable seasonality only for those variants using one of the following two methods (selecting ‘disable seasonality’ instead of ‘enable seasonality’).
Apply seasonal forecasting in bulk to a group of variants
To enable seasonal forecasting, select variants in the Replenishment report.
Click Bulk Actions -> Enable Seasonality.
Individually enable seasonality for one variant
In Replenishment, click on the Details icon.
Click on the Edit Forecast section in Details and finally select ‘This variant is seasonal’.
For other methods of editing your forecast, see our article about forecasting for the holiday season.