Create Model Demand

Uploads historical demand data for a forecast model. The model must exist and belong to the authenticated organization.

You can use any of the following content types:

• application/json: A JSON object with a demand array of {date, demand} objects.
• text/csv: A CSV file with lowercase headers date,demand and one row per data point.
• application/x-ndjson: Newline-delimited JSON where each line is a {date, demand} object.

The date field should be in YYYY-MM-DD format and demand must be a non-negative number.