Oracle Solution for Error ora-23460

ORA-23460: missing value for column string in resolution method "string" for "string"."string"."string"

What triggered the Error:

fore resolving conflicts, some values necessary resolving conflicts are not available, or after resolving conflicts, some values necessary for re-trying of the SQL are not available

What should we do to fix it:

fine appropriate flavors, provide necessary values through availability vector in USER FLAVOR FUNCTION for conflict resolution