Error fetching data for this visual

Hi Bandy,
Thanks for the update and the detailed diagnostics.

You are right this behaviour stems from how Power BI translates visual-level filters on measures (like [CPM] < 10) into queries for the SSAS engine. When string columns (like CampaignName) contain non-ASCII characters, this can sometimes lead to query parsing or encoding issues, particularly in MDX/DMX back-end processing.

To workaround this issue, here are a few suggestions: Avoid using visual-level filters on calculated measures directly when dealing with non-ASCII text. Instead, incorporate the filter logic within your measure, below mentioned measure:

Filtered CPM = IF ( [CPM] < 10, SELECTEDMEASURE() )

and use this measure in the visual without adding a visual-level filter.

Alternatively, replace the hardcoded threshold with a disconnected parameter table so you can control the filtering via slicer selection, without triggering internal query issues. If you are using Import mode and have control over the model, you could also pre-calculate flags like IsLowCPM in a column and filter based on that instead of a measure.

Hope this helps clarify things and let me know what you find after giving these steps a try happy to help you investigate this further.

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