We have isUnique property for a matrix column and the keyName property which was implemented before isUnique property. After that we have introduced the detail panel for the matrices. However, if you set the "keyName" to the question name of the question from detail panel template, matrix will not report any errors about duplication values in this question.
We have isUnique property for a matrix column and the keyName property which was implemented before isUnique property. After that we have introduced the detail panel for the matrices. However, if you set the "keyName" to the question name of the question from detail panel template, matrix will not report any errors about duplication values in this question.