Web Content Accessibility Guidelines a guide to the accessibility requirements
2 Operable

2.5.7 Dragging Movements

Conformance level: AA
Criterion released in WCAG version: 2.2

Official description of the success criterion

All functionality that uses a dragging movement for operation can be achieved by a single pointer without dragging, unless dragging is essential or the functionality is determined by the user agent and not modified by the author.

What to do?

For any action that involves dragging, provide a simple pointer alternative.

Why is it important?

Some people cannot use a mouse to drag items.

How to test for it?

It's good to be aware that the single-pointer alternative doesn't have to be the exact same component. The functionality just needs to be equivalent to the draggable action.

More about this criterion elsewhere