What causes DF-CSVWriter-InvalidQuoteSetting?

The quote character in the delimited text dataset is set to a multi-character value — CSV quoting only supports single characters (e.g., double-quote '"' or single-quote '''). The quoting mode conflicts with the column delimiter: the same character is used as both the column delimiter and the quote character. The dataset's quoting settings were inherited from a template and contain a placeholder value that was never replaced

How do I fix DF-CSVWriter-InvalidQuoteSetting?

Open the delimited text dataset used by the sink and go to Format settings.. Set the 'Quote character' to a single character — double-quote ('"'), or choose 'No quoting' if your data does not contain the column delimiter within values.. Ensure the quote character is different from the column delimiter character.. Enable data flow Debug mode and preview the sink with a small row sample to confirm the CSV output is valid.

Medium severitydata flow

Power BI Refresh Error:
DF-CSVWriter-InvalidQuoteSetting

What does this error mean?

The ADF Mapping Data Flow CSV writer has an invalid quote character setting. The quoting character configured in the sink dataset or transformation conflicts with the CSV writer's supported options, causing the write to fail.

Common causes

1The quote character in the delimited text dataset is set to a multi-character value — CSV quoting only supports single characters (e.g., double-quote '"' or single-quote ''')
2The quoting mode conflicts with the column delimiter: the same character is used as both the column delimiter and the quote character
3The dataset's quoting settings were inherited from a template and contain a placeholder value that was never replaced

How to fix it

1Open the delimited text dataset used by the sink and go to Format settings.
2Set the 'Quote character' to a single character — double-quote ('"'), or choose 'No quoting' if your data does not contain the column delimiter within values.
3Ensure the quote character is different from the column delimiter character.
4Enable data flow Debug mode and preview the sink with a small row sample to confirm the CSV output is valid.

Frequently asked questions

What quote characters are valid for a CSV Mapping Data Flow sink?

Any single printable character can serve as the quote character. Double-quote ('"') is standard per RFC 4180; single-quote and backtick are also common.

Can I disable quoting entirely?

Yes. Set 'Quote character' to 'No quoting' in the dataset Format settings — only if you are certain no string values contain the column delimiter, otherwise the resulting CSV will be malformed.

Does this error also affect CSV sources, or only sinks?

The DF-CSVWriter prefix indicates a sink (write) error. Invalid quote settings on a source produce different error codes or incorrect parsing rather than a hard failure.

Official documentation: https://learn.microsoft.com/en-us/azure/data-factory/data-flow-troubleshoot-guide