in src/libs/transforms.ts [303:310]
function subscriptionIsCorrect(subscription: ZuoraSubscription): boolean {
// This function decides if a ZuoraSubscription should be actually put into the output file.
// It was first written to exclude those with an empty delivery agent, during E2E testing.
// When the data is corrected in Zuora and we guarrantee that no subscription will have
// missing attribute then we can remove it, otherwise we may end up expanding it to perform
// some validations
return subscription.subscription_delivery_agent != '';
}