CWM11 — Supplier and version underspecified

Supplier and version of SoftwareSystem should be optional: they are not always known or relevant.

The description for supplier should clarify whether it represents any/all of: a) the original developer (e.g. "Oracle"); b) the entity who sold the software to the organization (e.g. a reseller); c) the IT support group within the organization who deployed it for a particular set of business users.

It would make more sense to model supplier as a reference to BusinessInformation::ResponsibleParty, since this would allow reuse, contact information and impact analysis ("supplier X has gone out of business, what have they supplied us?"). Version might also make sense on DeployedSoftwareSystem (at a logical/design level one might not care what the version is: but it might be required to record which version is actually deployed).

see below