Hi, I'm fairly new to stata, and have just uploaded panel data; 8 countries of 8 years. 3 of my variables are dummies. None of my data is missing. After running command xtset cn_id year stata tells me my data is unbalanced.
. xtset cn_id year
panel variable: cn_id (unbalanced)
time variable: year, 2000 to 2017
delta: 1 unit


I don't understand why, as I have all my data in place. Is it because I have 0s due to dummies. I'm pretty new to stata..

I have added images of results from other commands after reading similar queries, but I still don't understand. I've counted on excel and i have 240 0 values from my dummies,, pls help..!