Enhancements have been made to the logic to better handle the situation when the “*>XDD WHENFULL” directive has been used in xddgen generating the XDD and there is no valid combination of fields to compose a key. Now the index will be ignored by SQL instead of returning an error (CTDBRET_CALLBACK_17). In this situation, SQL will not be able to use the index to optimize queries. The index information, however, will be properly maintained on updates/inserts performed through SQL.