: Thanks for the quick reply. it is a simple data step and is in the following format: data xyz1; set xyz; where abc = ABC and XXX in ('a','b','c'); lmn = INPUT(prq,YYMMDD10.); /*Defining a new variable*/ run; There are two different data sets for two different years; and in the program there are two data steps of same kind(as above), reading information from the two different sets. The program is working fine till the initial year dataset but is giving the above error when reading dataset of later year.
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