[Return code] JET_errNoCurrentIndex [Description] 
There is no current index for the cursor. This will happen for JetMakeKey if the cursor is on the clustered index of a table, a primary index has not been defined, and JET_bitNormalizedKey was not specified. It is not possible to construct a search key if the cursor is on an index that does not have any key columns unless a previously constructed search key is provided.