UpdateRepeatingInvoice failed to update the repeatingInvoiceId provided in method but created a new repeating invoice

[yuruojie777]

// Create a repeating invoice
    @Test
    void testAddXeroRepeatingInvoice() throws Exception {
        String accessToken = xeroService.getToken();
        ApiClient defaultClient = new ApiClient();

        AccountingApi apiInstance = AccountingApi.getInstance(defaultClient);
        String xeroTenantId = xeroService.getTenantId();
        Boolean summarizeErrors = true;


        RepeatingInvoices repeatingInvoices = new RepeatingInvoices();
        RepeatingInvoice repeatingInvoice = new RepeatingInvoice();
        UUID invoiceId = UUID.randomUUID();
        System.out.println(invoiceId);
        repeatingInvoice.setRepeatingInvoiceID(invoiceId);
        Contact contact = new Contact();
        contact.setContactID(UUID.fromString("fe6f61ee-e6f1-4f32-b6fe-3486c6bac13c"));
        Schedule schedule = new Schedule();
        schedule.setUnit(Schedule.UnitEnum.WEEKLY);
        schedule.setStartDate(org.threeten.bp.LocalDate.now());
        schedule.setEndDate(org.threeten.bp.LocalDate.now().plusDays(3L));
        schedule.setPeriod(5);
        schedule.setDueDate(3);

        LineItem lineItem = new LineItem();
        lineItem.setQuantity(1.0);
        lineItem.setDescription("test");
        lineItem.setAccountCode("123456");
        lineItem.setUnitAmount(108.8);

        repeatingInvoice.setContact(contact);
        repeatingInvoice.setLineItems(List.of(lineItem));
        repeatingInvoice.setSchedule(schedule);
        repeatingInvoice.setType(RepeatingInvoice.TypeEnum.ACCREC);
        repeatingInvoice.setStatus(RepeatingInvoice.StatusEnum.AUTHORISED);

        repeatingInvoices.setRepeatingInvoices(List.of(repeatingInvoice));
        try {
            RepeatingInvoices result = apiInstance.createRepeatingInvoices(accessToken, xeroTenantId, repeatingInvoices, summarizeErrors);
            System.out.println(result);
        } catch (XeroException e) {
            System.err.println("Exception when calling AccountingApi#createRepeatingInvoices");
            e.printStackTrace();
        }
    }


// Update the repeating invoice based on the returned repeating invoice Id

@Test
    void testUpdateXeroRepeatingInvoice() throws IOException {
        String accessToken = xeroService.getToken();
        ApiClient defaultClient = new ApiClient();
        UUID repeatingInvoiceID = RETURNED REPEATING INVOICE ID
        AccountingApi apiInstance = AccountingApi.getInstance(defaultClient);
        String xeroTenantId = xeroService.getTenantId();
        RepeatingInvoices repeatingInvoices = new RepeatingInvoices();
        RepeatingInvoice repeatingInvoice = new RepeatingInvoice();
        Contact contact = new Contact();
        contact.setContactID(UUID.fromString("fe6f61ee-e6f1-4f32-b6fe-3486c6bac13c"));
        Schedule schedule = new Schedule();
        schedule.setUnit(Schedule.UnitEnum.MONTHLY);
        schedule.setStartDate(org.threeten.bp.LocalDate.now());
        schedule.setEndDate(org.threeten.bp.LocalDate.now().plusDays(10L));
        schedule.setPeriod(5);
        schedule.setDueDate(3);

        LineItem lineItem = new LineItem();
        lineItem.setQuantity(1.0);
        lineItem.setDescription("test");
        lineItem.setAccountCode("123456");
        lineItem.setUnitAmount(109.9);

        repeatingInvoice.setContact(contact);
        repeatingInvoice.setLineItems(List.of(lineItem));
        repeatingInvoice.setSchedule(schedule);
        repeatingInvoice.setType(RepeatingInvoice.TypeEnum.ACCREC);
        repeatingInvoice.setStatus(RepeatingInvoice.StatusEnum.AUTHORISED);
        repeatingInvoices.setRepeatingInvoices(List.of(repeatingInvoice));
        try {
            RepeatingInvoices result = apiInstance.updateRepeatingInvoices(accessToken, xeroTenantId, repeatingInvoiceID, repeatingInvoices);
            System.out.println(result);
        } catch (XeroException e) {
            System.err.println("Exception when calling AccountingApi#updateRepeatingInvoice");
            e.printStackTrace();
        }
    }

What I got in my Demo company is, every time I do updating, a new invoice will be created instead of replacing the previous one. But I can literally do updating repeating invoices mannually in Xero Demo company.

[icomputeUK]

Been trying to do similar by updating due dates in bulk.

But, I think UpdateRepeatingInvoice only creates new invoices or deletes them. As per the documentation here:

https://developer.xero.com/documentation/api/accounting/repeatinginvoices#overview

And the API Explorer here:

https://api-explorer.xero.com/accounting/repeatinginvoices/updaterepeatinginvoice?path-repeatinginvoiceid=