Adding Region ID (#352)

Region dimension is getting split into 2 dimensions: Region ID and Region Name. This is the change to set up Region ID dimension.

---------

Co-authored-by: Sanjna Srivatsa <132018371+SanjnaSrivatsaVMware@users.noreply.github.com>
Co-authored-by: Udam Dewaraja <udam@finops.org>
Co-authored-by: Christopher Harris <cnharris@gmail.com>
Co-authored-by: Larry Advey <ljadvey@twilio.com>

specification/columns/columns.mdpp

@@ -28,7 +28,7 @@ The FOCUS specification defines a group of columns that provide qualitative valu
 !INCLUDE "pricingunit.md",1
 !INCLUDE "provider.md",1
 !INCLUDE "publisher.md",1
-!INCLUDE "region.md",1
+!INCLUDE "regionid.md",1
 !INCLUDE "resourceid.md",1
 !INCLUDE "resourcename.md",1
 !INCLUDE "resourcetype.md",1

specification/columns/regionid.md

@@ -0,0 +1,31 @@
+# Region
+
+A Region ID is a provider-assigned identifier for an isolated geographic area where a [*resource*](#glossary:resource) is provisioned or a [*service*](#glossary:service) is provided. The region is commonly used for scenarios like analyzing cost and unit prices based on where *resources* are deployed.
+
+RegionId MUST be present in the billing data and MUST be of type String. RegionId MUST NOT be null when a *resource* or *service* is operated in or managed from a distinct region. RegionId values MUST be consistent within the provider and MUST be the same values used to indicate the region when provisioning or purchasing the *resource* or *service*.
+
+## Column ID
+
+RegionId
+
+## Display name
+
+Region ID
+
+## Description
+
+Provider-assigned identifier for an isolated geographic area where a *resource* is provisioned or a *service* is provided
+
+## Content constraints
+
+| Constraint      | Value           |
+|-----------------|-----------------|
+| Column type     | Dimension       |
+| Column Required | True            |
+| Allows nulls    | True            |
+| Data type       | String          |
+| Value format    | \<not specified> |
+
+## Introduced (version)
+
+0.5

supporting_content/columns/region.md → supporting_content/columns/regionid.md

@@ -1,4 +1,4 @@
-# Column: Region
+# Column: Region ID
 
 ## Example provider mappings
 
@@ -42,7 +42,7 @@ Current values observed in billing data for various scenarios:
 - We had a poll about whether Region should be nullable or not and decided it should. Updated this as part of 1.0.
 
 -   Definition discussion:\
-    "A Region is an isolated geographic area where a resource is provisioned in OR a service is provided from. The region identifier is assigned by the provider. Resources and/or services are commonly utilized from different regions based on considerations for data sovereignty, performance, cost, convenience, or geopolitical reasons. "
+    "A Region ID is an identifier for an isolated geographic area where a resource is provisioned in OR a service is provided from. The region identifier is assigned by the provider. Resources and/or services are commonly utilized from different regions based on considerations for data sovereignty, performance, cost, convenience, or geopolitical reasons. "
 
 | Provider  | Provider Region / Location | AZ / Zone  | Region Category(?) | Geographical Region (code? Continent) | Country (code?) | TimeZone (check need) |
 |-----------|----------------------------|------------|--------------------|---------------------------------------|-----------------|-----------------------|