DB2 has a mechanism called down level detection. It's purpose is to identify if a certain file is not "up to date" with the rest of the database. this can be cause by copying a file from one DB2 to another using dsn1copy, or have an old copy of a file restored not using the recover utility.
In order to solve this problem you need to run the repair utility with the levelid clause.
If this problem is caused by a dsn1copy job, add the reset parameter to dsn1copy and it will tell db2 to reinitialize the level id the next time the file is opened
You can also recover this tablespace in order to solve the problm
I am not sure, what utility has caused this error. How to find the utility which caused this? What action do I need to take now to restore the table space?
