Fix missing CapacityReservationId and CapacityReservationStatus columns in Power BI storage templates

[Copilot]

• Analyzed the issue: Power BI storage templates missing CapacityReservationId and CapacityReservationStatus columns
• Reviewed documentation: FOCUS 1.2 spec requires these columns based on AdditionalInfo.VMCapacityReservationId
• Found source data: x_CapacityCommitmentId already extracted from VMCapacityReservationId in ftk_NormalizeSchema.pq
• Add CapacityReservationId column to ftk_NormalizeSchema.pq (map from x_CapacityCommitmentId)
• Add CapacityReservationStatus column to ftk_NormalizeSchema.pq (logic: null if no ID, "Unused" if resource type is capacity reservation, otherwise "Used")
• Add columns to storage Costs.tmdl table definition
• Update changelog
• Verify KQL templates already have the columns (confirmed)
• Validate syntax of changes (confirmed)
• Address PR feedback: Move changelog entry to Added section and reword

Original prompt

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This section details on the original issue you should resolve

<issue_title>CapacityReservationId column does not exist in the rowset</issue_title>
<issue_description>We are currently utilizing the Cost Summary prebuilt Power BI template available from the FinOps Toolkit (https://microsoft.github.io/finops-toolkit/power-bi).

While the dataset refreshes successfully in Power BI Desktop, we encounter the following error when attempting to refresh it in the Power BI Service:

Data source error: The 'CapacityReservationId' column does not exist in the rowset.

We kindly request your support in resolving this issue and addressing the inconsistency observed.

</issue_description>

<agent_instructions>Triage the issue, research using mslearn, provide proposed solutions along with links/citations to authorative sources.</agent_instructions>

Comments on the Issue (you are Copilot in this section)

Fixes #1836

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[iamfirdousfifa]

Hello Team Brett Wilson (@MSBrett) could you please share tentative ETA on the fix

[Copilot]

Pull request overview

This PR adds support for FOCUS 1.2 CapacityReservationId and CapacityReservationStatus columns to storage-based Power BI reports, addressing a data refresh error in the Power BI Service. The columns are derived from existing data (x_CapacityCommitmentId extracted from VMCapacityReservationId in AdditionalInfo).

Key changes:

• Added Power Query logic to generate CapacityReservationId and CapacityReservationStatus columns
• Updated Power BI table schema to include the new columns
• Documented changes in the changelog

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
src/power-bi/queries/ftk_NormalizeSchema.pq	Added CapacityReservationId column (mapping from x_CapacityCommitmentId) and CapacityReservationStatus column (with logic to detect "Unused" vs "Used" status)
src/power-bi/storage/Shared.Dataset/definition/tables/Costs.tmdl	Added column definitions for CapacityReservationId and CapacityReservationStatus with metadata
docs-mslearn/toolkit/changelog.md	Added changelog entry documenting the new columns, plus additional fix entry