@boston480 wrote: The problem was fixed. Reason: I drag XXX.log file into log window built in SAS, so it produced this error. If I drag the XXX.log file into edit windows, no error. So actually, our code work fine.   Thanks for every one.   Close this topic please. On this forum the topic starter should indicate the solution to the question by marking a post as "accepted solution". Which sometimes does include "I made a mistake" and how to avoid it, such as dropping into the correct window. ... View more