The PATCH method is used for updating item properties.
PATCH requests must contain in the Headers of the request the following:
For each item property you want to update, you must run a separate PATCH request.
PATCH requests cannot be used to update properties that are read-only in the UI.
PATCH requests follow the same rules and logic as the desktop application for updating properties. Any patch request that doesn't follow the application rules returns a four hundred (4xx) error code.