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There's BYO answers in Raw data but ACBC analysis can't recognize BYO answers

First of all, there are only two attributes, brand and price.

After I finished fieldwork, I opened raw data file.
I checked every raw data is fine, and I put it to analysis,
but ACBC cannot read brand attribute well.

It says,
Respondent 41 - A level was encountered in the respondent which does not exist.  The attributes may have been changed after data was collected.

But nothing has been changed...
What can I do?

asked Jul 30, 2015 by Jay
This is a question to send in (with your project files) to support at support@sawtoothsoftware.com.  You might have gotten test/practice data (when the design was different) mixed up with real data (after you finalized the design)?  Or, maybe a random corruption in a data file?

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