I believe it has to do with the length of the variable "variable". Please read http://support.sas.com/kb/47/144.html Problem Note 47144: The Interactive Grouping node Special Codes data set must specify $32 as the length for VARIABLE The Interactive Grouping node in SAS ® Enterprise Miner™ enables you to use a Special Codes data set for mapping special missing values. One of the variables in the Special Codes data set is a character variable named "Variable". The variable named "Variable" must be defined as a character variable with length $32, or the Special Codes data set might be ignored when the node runs. There are no errors or warnings to indicate that the Special Codes data set is not used. To avoid the problem, make sure that you create the "Variable" variable with length $32. EXAMPLE /* create a special codes data set */ data myspecialcodes; length variable $32 value $5; variable='_ALL_'; replacement = '.A'; value='-99'; output; replacement = '.B'; value='-999'; output; replacement = '.C'; value='99999'; output; run; For more information, see Using a Special Codes Data Set for Special Missing Values in "SAS Enterprise Miner Help". I hope it helps, Miguel
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