Results > Manipulate the Results Set > Combine Parameter > Exceptions

Exceptions
In some cases, you may not want to combine documents. If you set Combine to FieldCheck or ReferenceTypeFields, by default IDOL server combines all documents that do not contain the field and returns only one set.
To return these results without combining them, set the CombineIgnoreMissingValue configuration parameter to true. For example:
[Server]
CombineIgnoreMissingValue=true