proc esm data = wrk.FCST_15_16_NON_X out = wrk.f_raw_fcst_NON_X lead = 53 ; id week interval = week ACCUMULATE=total ; by target; forecast writer_count imputed_mg / model = winters ; run; ERROR: Unable to forecast the variable writer_count. Forecast values set to missing. NOTE: The above message was for the following BY group: target=NON_X
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