Help using Base SAS procedures

Need some guidance using proc panel with unbalanced data

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Need some guidance using proc panel with unbalanced data

Hello,

I'm working on a project for a class, and I've some unbalanced panel data for student test scores and other individualized data. Whenever I try to use proc panel on the unbalanced set, it gives me a "There is only one cross section or time series observation. Computations will be terminated" error. If I balance the panel by removing observations not present in all time periods, the procedure works fine. One of my professors said that this is a bug in SAS. Is there a workaround or fix available?

Thank you for your assistance!

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