Adding alternate keys for external reference fields
Enable the creation of data reference fields that are based on remotely sourced data objects by defining alternate key fields. Through alternate keys, the system identifies the fields that constitute a reference to a unique instance of a data object, regardless of the object's source.For example, you want to create a data reference to a Customer data object that you want to source from an external customer management system. After updating the data page source for the data object to the customer management system, you update the data page parameters with alternate key source information. Then, in your Pega Platform application, you add the data reference that the system can now correctly source and validate through the alternate key.
- In the navigation pane of Dev Studio, click App.
- Expand the class that contains the data page with the parameter for which you want to specify an alternative identifier.
- Click .
- On the Parameters tab, select the Is this page used for alternate key storage? checkbox.
- In the Linked field column that appears, enter the name of an existing property for each parameter.
- Save your changes.
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