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In Looker Studio, #N/A usually means the source data is returning a value the connector can’t interpret, often from formulas like VLOOKUP or MATCH in Google Sheets that don’t find a match. Check the sheet for those cells and confirm the formula outputs are actual values rather than errors. If needed, wrap formulas with IFERROR to return a blank or default value. After updating the sheet, refresh the data source in Looker Studio from Resource > Manage added data sources to ensure the updated values are pulled in.