Types of changes in the classification, including Codes, Titles and Classification Items (Based on GSIM)

Notes:

1. More than one classification item may be involved in the relationship between the old and new structure.
2. "Transfer" can also be applied at higher levels of a classification. In such cases the part of the denotation that moves (to another (existing) item) corresponds to an item at the lower level.

Where real change stands for changes in meaning or scope, whether or not accompanied by changes in naming (title and definition) and/or coding, virtual change stands for changes in coding and/or naming, while the meaning of the classification item remains the same.

Code change and name change do not result in border/scope changes of the classification item.

A classification item expires, while its denotation proceeds as the denotation of an emerging classification item. (Note from GSIM: Strictly speaking, this heading is not correct, because different codes denote different Classification Items)

In fact, for a code change to be part of virtual change, the code of a Classification Item changes, while its denotation (including its borders and scope) remains the same.

The name (title or definition) of a classification item changes, while its denotation (including its borders and scope) remains the same.

Note that not all changes in (the wording of) definitions imply changes in meaning. Indeed, changes which "merely" intend to enhance the clarity or quality of a title and/or definition, or to further operationalise a definition on the basis of situations encountered in practice, do not affect the meaning of a classification item. The same goes for extending a Classification Index or case law.