CREATE VIEW failed because column 'column_name' in view 'view_name' exceeds the maximum of 1024 columns upgrade from MS CRM 4.0 to MS CRM 2011

while upgrading MS CRM 4.0 to MS CRM 2011, if you get the below message and it failed then the reason is as below.
"If you have more than 1023 attributes defined for an entity, you must delete the additional attributes before you run the upgrade."

hope this will help...

regards,
yes.Sudhanshu