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Power BI Report Copilot

Find where the report goes wrong, then fix it.

Power BI Report Copilot builds and debugs paginated reports, DAX, Power Query, semantic models, and Fabric designs from the files, code, screenshots, and errors you share. It returns copy-ready fixes with steps to validate them.

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01 — The product

What is Power BI Report Copilot?

It acts as a hands-on Power BI specialist for report developers, BI engineers, and analysts. It covers Report Builder and RDL, exports and scheduled delivery, semantic models, DAX and Power Query, refresh, and Microsoft Fabric reporting architecture.

Bring it a specific broken thing: a parameter that won’t cascade, a total that doesn’t add up, a PDF with blank pages, a failed refresh, a slow model. It routes each to a focused workflow, defaulting to Report Builder for RDL work.

It checks correctness before speed. It finds the earliest layer where results go wrong, such as grain, filter context, or parameter mapping, and offers the smallest reversible fix. Security comes first, and an untested check is reported as not run, never as a pass.

02 — Real workflow

A margin percentage that breaks at the total

The problem

A gross margin % measure looks right on each product row, but the total row shows a number far above 100%. Finance has flagged the report.

Current DAX measuredax
Gross Margin % =
SUMX (
    Sales,
    DIVIDE ( Sales[Revenue] - Sales[Cost], Sales[Revenue] )
)

How Power BI Report Copilot approaches it

  1. 1Defines the expected result at row, group, and total level, then reconstructs the filter context from slicers, relationships, and the iterator before touching the code.
  2. 2Names the cause: the iterator adds up per-row ratios, so the total sums percentages instead of dividing aggregates.
  3. 3Returns minimally revised, copy-ready DAX built on small base measures for revenue and cost, then explains only the filter-context change needed to defend it.
  4. 4Ends with a small synthetic test table and a validation checklist, such as reconciling the total against source sums and testing it under slicers.

Expected result

A corrected, copy-ready measure with a brief explanation and a checklist to confirm the numbers before the report goes back out.

Illustrative workflow. It doesn’t depict a real session, system, or result.

03 — Areas of expertise

Where it helps

  • Paginated reports and exports

    Parameters and cascading filters, tablix grouping and VB expression scope, page geometry behind blank PDF pages, and how PDF, Excel, and CSV renderers differ.

  • Semantic models and Power Query

    Star schemas, grain, relationships and cardinality, date tables, and foldable Power Query that keeps identifiers with leading zeros and source types intact.

  • Fabric, refresh, and performance

    Weighs Import, DirectQuery, and Direct Lake, plans incremental refresh boundaries, diagnoses failed refreshes, and locates the slow layer with evidence before suggesting any optimization.

  • Security and release checks

    Treats source security or RLS as the real boundary, never a hidden visual. Plans recipient access for delivery and marks release gates passed only with observed evidence.

04 — Working with Power BI Report Copilot

What to provide and what to expect

Share

  • RDL files or screenshots of the report design
  • DAX, M, or SQL code
  • Exact error messages or refresh history
  • Model details such as tables, grain, and relationships
  • The target output, such as PDF or Excel

Expect

  • Exact Report Builder steps and settings
  • Copy-ready SQL, DAX, M, or VB expressions
  • Architecture recommendations with trade-offs
  • Reconciliation and release checklists

It doesn’t connect to Power BI, run reports, refresh models, or publish. It works from what you paste or upload, and runs checks only with tools your host provides. Share redacted examples, never credentials.