Set the property id and the property values in the digx_fw_config_all_b table. The property id will be the fully qualified name of the service and the value will be the fully qualified name of the custom extension created.

insert into digx_fw_config_all_b 
(PROP_ID, CATEGORY_ID, PROP_VALUE, FACTORY_SHIPPED_FLAG, PROP_COMMENTS,
SUMMARY_TEXT, CREATED_BY, CREATION_DATE, LAST_UPDATED_BY, LAST_UPDATED_DATE,
OBJECT_STATUS_FLAG, OBJECT_VERSION_NUMBER)
values 'com.ofss.digx.app.origination.service.submission.applicant.Applicant',
'ServiceExtensionsConfig', 'com.ofss.digx.app.origination.service.submission.application.ext.
CustomLoanApplicationExtension','N', 'asdf', 'asdf', 'asdf', '', 'asdf', '', 'Y', 1);