I am very new to SAS. I usually execute a step for export to excel in a project, and never had a problem, but this time, after this step, I found two errors in relationship with the format.     Here is the step and the errors:   20         proc sql noprint; 21         select put(max(Fh_Llamada), yymmn6.0) as Fhdato 22         into: Fhdato 23         from pivot; ERROR: Numeric format YYMMN in PUT function requires a numeric argument. ERROR: The following columns were not found in the contributing tables: Fh_Llamada.   Would it be possibly that a contributing table is missing? Is not very usual. Thanks, ... View more