AP Invoice Approval provides the ability to support external data source (such as the configured connector in AP Invoice eForm) functionality for GL lookup data.To use this functionality, you must have an installation of Perceptive FPA Services 1.3.1 and higher versions and Perceptive Connect Runtime Database Connector, version 1.0.30.AP Invoice eForm and Custom eForm specific configuration details are provided in the following topics. If you are using AP Invoice eForm then you must use the AP Invoice eForm specific configurations and if you are using Custom eForm then you must use the Custom eForm specific configurations.