JUMP TOGeneralIntroductionVersioningRate LimitingAuthenticationCompany API KeyOAuth 2.0 ProtocolSandbox environmentScopesAccount set-upFiltersFilter invoicesFilter estimatesFilter billing subscriptionsAccepted VAT ratesAutomatic payment matchingHow to send estimates / invoices by emailsData Sharing connectivityCustomer InvoicingCustomer InvoicesImport an invoicepostCreate an invoicepostList all invoicesgetRetrieve an invoicegetUpdate an invoiceputLinks an invoice with a credit notepostSend an invoice or an estimate by emailpostMark the invoice as paid. No accounting entries created.putFinalize an invoiceputUpdate plan items numberspostEstimatesList all estimatesgetCreate an estimatepostRetrieve an estimategetUpdate an estimate statusputBilling SubscriptionsList all Billing SubscriptionsgetCreate a Billing SubscriptionpostRetrieve a Billing SubscriptiongetUpdate a Billing SubscriptionputReferentialsCustomersCreate a customerpostList all customersgetRetrieve a customergetUpdate a customerputSend a mandate request emailpostSuppliersList all suppliersgetCreate a supplierpostRetrieve a suppliergetUpdate a supplierputCategoriesList all categoriesgetCreate a new categorypostRetrieve a categorygetUpdate a categoryputCategoryGroupsList all category groupsgetProductsCreate a productpostList all productsgetRetrieve a productgetUpdate a productputPlan ItemsList all plan itemsgetCreate a plan itempostEnumsRetrieve an enumgetSupplier InvoicingSupplier InvoicesList all invoicesgetRetrieve a supplier invoicegetUpdate a supplier invoiceputImport a supplier invoicepostOthersConnection testUser ProfilegetWebhooksInvoices import completedpostPowered by List all Billing Subscriptionsget https://app.pennylane.com/api/external/v1/billing_subscriptionsThis endpoint returns a list of subscriptions.