Demand history rows unreadable

XYZ Segmentation could not read some rows of the scenario's demand history: a date it cannot read, a quantity that is not a number, or a blank in a column it groups by. The node stops rather than leave the rows out, because a dropped row would quietly change how variable an item looks.

What to do

The message lists each row, its value and what was expected. Correct those rows in the data Map Demand History reads, with dates as year-month-day, and run the workflow again.

Where it comes from

Shown by XYZ Segmentation. It is one of the messages about a node.