# Delivery date (Leistungsdatum) on invoices

Edit Delivery date on payables when DATEV RW Leistungsdatum is enabled, set it from workflow, and export it in EXTF.

When your workspace uses DATEV Rechnungswesen with **Leistungsdatum**, Cortena shows an editable **Delivery date** on payable detail. That value can flow into DATEV EXTF export and can be set by the **Set invoice date** workflow step.

**Who this is for:** German AP teams on DATEV RW who need Leistungsdatum on bookings, and admins who enable the DATEV RW EXTF Leistungsdatum feature.

## 1. When the field appears

**Delivery date** is shown on payable invoice detail only when:

- The tenant has **DATEV Rechnungswesen** (Buchungsdatenservice) connected, and
- Feature **DATEV RW EXTF Leistungsdatum** is enabled for the workspace.

German UI labels use **Leistungsdatum** for the same field.

## 2. Edit on invoice detail

1. Open a payable in the combined invoice view.
2. In the dates section, find **Delivery date**.
3. Edit with the same spreadsheet-style date controls as invoice / posting / due dates (click, type, Enter to save; Escape to cancel).

Activity records the change like other date edits.

## 3. Set via workflow

With Leistungsdatum enabled, the **Set invoice date** node can target **Delivery date**: assign custom, copy from another date, clear, or set when the step runs.

See [Set invoice date (workflow)](https://help.cortena.ai/guides/workflows/set-invoice-date) for modes and service-period expressions.

## 4. Export

When Leistungsdatum is enabled for DATEV RW EXTF, the stored **Delivery date** is available to the Buchungsstapel export path. What you see on the invoice is what Cortena sends. Edit before export if the date is wrong.

Related: [DATEV Rechnungswesen](https://help.cortena.ai/guides/integrations/datev-rechnungswesen).

## Tips and limitations

- Field is absent when the feature flag is off. Do not expect it on Exact/Twinfield-only tenants.
- Clearing delivery date via workflow is only allowed when the feature is on.
- Blocked posting months apply to **posting date**, not to delivery date itself.

## Quick reference

| Task | Where |
| --- | --- |
| Enable | Super-admin / tenant feature **DATEV RW EXTF Leistungsdatum** (+ DATEV RW) |
| Edit | Payable detail → **Delivery date** |
| Automate | Workflow → **Set invoice date** → **Date to set** = **Delivery date** |
| Confirm export | Export preview / DATEV RW Buchungsstapel |