if INDEPVAR is an independent variable and DEPVAR is dependent then you probably should reverse them on the model statement.
Generally the SAS MODEL statements are Model dependent = independents /options.
The example that you show only has one common date element
From the documentation:
The PANEL procedure also verifies that the time series ID values are the same for all cross sections
If you go to http://documentation.sas.com/api/docsets/etsug/14.2/content/etsug_code_panex02.htm?locale=en as one example note that "time period" variable values are 1 to 15 for each firm ID value.
Suggest: copy the data and code from that example and then remove ONE record for ONE firm and see the result.
Note that your example data does not run as you did not provide an informat for date that would work for the given code. All values would have generated errors of invalid data for date. And even with an appropriate informat
10002 02-011-2017 140 68 would be an error because either mmddyy10 or ddmmyy10 would choke on the 3 digit middle value.
Instructions here: https://communities.sas.com/t5/SAS-Communities-Library/How-to-create-a-data-step-version-of-your-data-AKA-generate/ta-p/258712 will show how to turn an existing SAS data set into data step code that can be pasted into a forum code box using the {i} icon or attached as text to show exactly what you have and that we can test code against.
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