5965 PPI collation character set is not installed.
An operation on a character partitioned primary index was attempted that is not allowed because the PPI is collated by a client character set that is no longer installed.
Only the first sixteen character sets (in ascending order by TranslateName in DBC.Translation) marked with a value of DBC.Translation.Install as 'Y' will be installed.
Make sure the PPI collation character set is installed in DBC.Translation. The PPI collation character set of a permanent table or join index can be looked up in columns CollationName and CharSetID of DBC.IndexConstraints.