By default, an interval variable has length 8 in a SAS data set. You can use a LENGTH statement to specify a shorter length. However, if you run the SAS^® Enterprise Miner™ Variable Clustering node on a data set with shortened numeric variable lengths, errors such as the following might be displayed:

ERROR: A character operand was found in the %EVAL function or %IF condition 
       where a numeric operand is required. The condition was: &ngroup
ERROR: The %TO value of the %DO VCI loop is invalid.
ERROR: The macro VARCLUS2 will stop executing.

To work around the problem, do not specify length values that are shorter than the default 8.

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