# Configuring a record specifier

The deployment includes support for both baseline and partial index updates. In order to support partial updates, an application must include a record specifier, which is a property marked as the unique identifier of records in the index.

For details about the record specifier property, refer to the Oracle Endeca Forge Guide.

When configuring your application, identify a property for which each record will have a unique assigned value. For example, in the reference sample_wine_data project, each record in the data set includes a unique Wine ID.

To enable the use of that property as a record spec:

1. Open the Property dialog box in Developer Studio.
2. Check the box labeled "Use for record spec."