ReasonForChangeValue

RoutingPoint feature

The ‘reasonForChange’ attribute is used across all features found within the OS MasterMap Sites Layer.

Defines the reason for a change made to a feature.

Value	Description
New	This is a new feature in the database.
Modified	The feature has been edited by an operator. Used in the following cases: 1. The geometry of a topographic feature is changed following real-world change (applicable to point, line and text features only and not polygons). 2. The geometry of a non-topographic feature, for example, inferred link or BoundaryLine feature is changed. 3. A cartographic symbol feature is repositioned. 4. A CartographicText feature is repositioned.
Reclassified	The descriptive attributes of a feature have changed. The feature code may have changed.
Attributes	Applied to features that have had only attributes changed, except those covered by TextChange and Reclassified values.
Position	Feature has changed geometry and/or position due to an improvement in its absolute accuracy; that is, its relationship to the National Grid (relevant for the positional accuracy improvement programme which is now complete). This type of feature change is not associated with real-world change.
Software	Feature has been adjusted by an automatic software process. Includes geometric adjustment, cleaning, squaring, paralleling (text and lines) and reversing direction of digitising.