Config pack API version

API version - an internal version that indicates the major and incompatible changes set on the backend. Before the API version, the target editor and engine versions was used. The main problem of target versions that they only reported a possible incompatibility, however, they don't allow engine to manage compatibility directly by applying of different read algorithms in depend from the API version. API version will NOT be changed when adding or removing new fields and data types without of compatibility breaking. The only next reasons may cause API version change: changing the existing value or group (using different value unit, value type, the role of value in the module, etc.); Cchanging the behavior of data processing that doesn't compatible with the current state; Renaming of config files, etc.

List of API versions
Latest API version is 41.

41
The first API version.