Part Modeling > Datum Features > Datum References > Placing Features with Saved Queries
  
Placing Features with Saved Queries
A saved query in the reference collector of a datum reference feature has no external references. Because it has no references, when you copy it or place it as part of a UDF, the following can occur:
The query finds a single result. This result automatically replaces the original. The datum reference feature is regenerated.
The query finds no results. The number of references determines the outcome:
If the datum reference feature has one reference, the Rule Editor dialog box opens. Select a result and click OK.
If the datum reference feature has more than one reference, a feature with an empty query is created and the Geom Check dialog box opens.
The query finds more than one result:
 
* If it is possible that the query could find more than one result, select the Advanced reference configuration check box in the Insert User-Defined Feature box when you place the UDF.
If one of the results' intent:instance name is an exact match, and its instance is not a purely numerical value, it automatically accepts this intent object. The datum reference feature is regenerated.
If there are no exact matches, or if the exact match includes a purely numerical instance, and you selected Advanced reference configuration when you placed the UDF, the Rule Editor dialog box opens. Select one of the results and click OK. The datum reference feature is regenerated.