Only the first 8 characters of numeric ABSORB values are recognized. The following message:

• WARNING: Formatted ABSORB values not sorted in ascending sequence.

might occur in GLM when it confuses the length of the raw (numeric) value with the length of the formatted value. Use the TRUNCATE option in the CLASS statement to force GLM into its historical behavior of using a maximum of 16 characters for the formatted value of CLASS and ABSORB variables. For example,

   proc sort data=test;
     by S;
   run;

   proc glm data=test; 
      absorb S; 
      class a b / truncate; 
      model y = a b; 
   quit; 

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