I am trying to run proc panel model but having following issues;
proc sort data=j; by gvkey datadate; run; proc panel data=j ; id GVKEY DATADATE; model invest = TQ cfcon /fixtwo pooled; run;
ERROR: Data set WORK.J is not sorted in ascending sequence with respect to time series ID. The current time period has year=2015 and the previous time period has year=2015 in cross section GVKEY=006506.
proc sort data=j; by datadate; run; proc panel data=j ; id GVKEY DATADATE; model invest = TQ cfcon /fixtwo pooled; run;
ERROR: There is only one cross section or time series observation. Computations will be terminated.
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