In this blog post, you’ll learn more about the Sybase Error Cannot add an Identity/Autoincrement Column to table %1, it participates in a join index. and the reason for receiving this error
Sybase SQL Error Message
Cannot add an Identity/Autoincrement Column to table %1, it participates in a join index.
Reason for this Error
Adding an Identity/Autoincrement Column to a table that participates in a join index is not allowed, to perform this operation, the join index must be dropped