diff --git a/src/features/orders/components/OrderEditForm/OrderEditForm.tsx b/src/features/orders/components/OrderEditForm/OrderEditForm.tsx
index 379c1d8..a6d0f71 100644
--- a/src/features/orders/components/OrderEditForm/OrderEditForm.tsx
+++ b/src/features/orders/components/OrderEditForm/OrderEditForm.tsx
@@ -1,7 +1,7 @@
 import { zodResolver } from '@hookform/resolvers/zod'
 import LocalShippingOutlinedIcon from '@mui/icons-material/LocalShippingOutlined'
 import { Alert, Box, Button, Stack } from '@mui/material'
-import { useMemo, useState } from 'react'
+import { useEffect, useMemo, useState } from 'react'
 import { useForm, useWatch } from 'react-hook-form'
 import { useNavigate } from 'react-router-dom'
 import { useDebouncedValue } from 'shared/hooks/useDebouncedValue'
@@ -135,17 +135,29 @@ export function OrderEditForm({
     errors: destinationErrors,
   } = destination.formState
 
+  // En cuanto se toca el domicilio pasa a validarse entero: sin esto, el modo
+  // `onChange` sólo marca el campo que se editó, y una ciudad o provincia que
+  // faltaban de antes apagaban el guardado sin decir por qué.
+  const { trigger: validateDestination } = destination
+  useEffect(() => {
+    if (destinationDirty) void validateDestination()
+  }, [destinationDirty, validateDestination])
+
   const locked = lockReason(order, shipment)
   const readOnly = locked !== null
   const removed = original.filter((line) => !lines.some((current) => current.key === line.key))
   const shortfalls = stockShortfalls(lines, removed, stocks.stocks)
   const changed = linesChanged(original, lines)
   const dirty = changed || contextDirty || destinationDirty
+  // El domicilio se valida sólo si el operador lo tocó: las órdenes de webhook
+  // no traen ciudad ni provincia, y exigirlas dejaba el guardado apagado —sin
+  // ningún campo en rojo— aunque sólo se quisiera cambiar el estado (hallazgo
+  // de auditoría, TESIS-89). Sin tocarlo, tampoco viaja (`toUpdatePayload`).
   const canSave =
     !readOnly &&
     dirty &&
     contextValid &&
-    destinationValid &&
+    (destinationDirty ? destinationValid : true) &&
     lines.length > 0 &&
     lines.every((line) => isQuantityValid(line.quantity)) &&
     shortfalls.length === 0
@@ -181,6 +193,7 @@ export function OrderEditForm({
       { ...context.getValues(), ...destination.getValues() },
       lines,
       changed,
+      destinationDirty,
     )
     update.mutate(payload, {
       onSuccess: () => {
diff --git a/src/features/orders/pages/OrderEditPage.test.tsx b/src/features/orders/pages/OrderEditPage.test.tsx
index b9511dd..052d038 100644
--- a/src/features/orders/pages/OrderEditPage.test.tsx
+++ b/src/features/orders/pages/OrderEditPage.test.tsx
@@ -199,6 +199,48 @@ describe('OrderEditPage', { timeout: 15_000 }, () => {
     expect(lastPayload().order.customer_city).toBe('Buenos Aires')
   })
 
+  // Hallazgo de auditoría (TESIS-89): las órdenes de webhook no traen ciudad ni
+  // provincia, y exigirlas dejaba el guardado apagado —sin ningún campo en
+  // rojo— aunque sólo se quisiera cambiar el estado.
+  describe('an order that came by webhook without city nor province', () => {
+    const fromWebhook = { ...ORDER, customerCity: null, customerProvince: null }
+
+    async function markPaid() {
+      fireEvent.mouseDown(screen.getByRole('combobox', { name: 'Estado' }))
+      fireEvent.click(await screen.findByRole('option', { name: 'Pagada' }))
+    }
+
+    it('can still be marked as paid', async () => {
+      mockAll({ order: fromWebhook })
+      renderPage()
+      await markPaid()
+
+      await waitFor(() => expect(saveButton()).toBeEnabled())
+    })
+
+    // Vacía, la provincia no pasa la validación de la API.
+    it('does not send the address it did not touch', async () => {
+      mockAll({ order: fromWebhook })
+      renderPage()
+      await markPaid()
+      await waitFor(() => expect(saveButton()).toBeEnabled())
+      fireEvent.click(saveButton())
+
+      expect(lastPayload().order).not.toHaveProperty('customer_province')
+    })
+
+    it('asks for every missing field once the address is touched', async () => {
+      mockAll({ order: fromWebhook })
+      renderPage()
+      fireEvent.change(screen.getByRole('textbox', { name: 'Calle y número' }), {
+        target: { value: 'Av. Siempreviva 742' },
+      })
+
+      expect(await screen.findByText('Ingresá la ciudad.')).toBeInTheDocument()
+      expect(saveButton()).toBeDisabled()
+    })
+  })
+
   // Criterio de la card: las validaciones bloquean el guardado.
   it('blocks saving with a missing customer', async () => {
     renderPage()
diff --git a/src/features/orders/types.ts b/src/features/orders/types.ts
index 9bab6f8..2e3be6e 100644
--- a/src/features/orders/types.ts
+++ b/src/features/orders/types.ts
@@ -231,10 +231,15 @@ export interface UpdateOrderPayload {
   order: {
     customer_name: string
     customer_document: string
-    customer_address: string
-    customer_city: string
-    customer_province: string
-    customer_zip_code: string
+    /**
+     * El domicilio viaja sólo si el operador lo tocó (ver `toUpdatePayload`):
+     * las órdenes de webhook no traen ciudad ni provincia, y mandarlas vacías
+     * haría que la API las rechace.
+     */
+    customer_address?: string
+    customer_city?: string
+    customer_province?: string
+    customer_zip_code?: string
     status: EditableOrderStatus
     items?: (
       | { id: number; quantity: number }
diff --git a/src/features/orders/utils/edit.test.ts b/src/features/orders/utils/edit.test.ts
index 68244ed..72bd41c 100644
--- a/src/features/orders/utils/edit.test.ts
+++ b/src/features/orders/utils/edit.test.ts
@@ -189,6 +189,12 @@ describe('toUpdatePayload', () => {
     ])
   })
 
+  it('leaves the address out when it was not touched', () => {
+    const payload = toUpdatePayload(HEADER, [line()], false, false)
+
+    expect(Object.keys(payload.order)).toEqual(['customer_name', 'customer_document', 'status'])
+  })
+
   it('refuses to send a new line without a warehouse instead of inventing one', () => {
     expect(() => toUpdatePayload(HEADER, [added({ warehouseId: null })], true)).toThrow(
       /has no warehouse/,
diff --git a/src/features/orders/utils/edit.ts b/src/features/orders/utils/edit.ts
index 506d024..4fdea5d 100644
--- a/src/features/orders/utils/edit.ts
+++ b/src/features/orders/utils/edit.ts
@@ -211,19 +211,28 @@ export function editSubtotal(lines: EditLine[]): number {
  * el backend borra las que no vienen. Una existente manda su `id` y la cantidad
  * nueva —el precio facturado no se toca—; una nueva manda los cuatro datos del
  * alta.
+ *
+ * El domicilio, también sólo si cambió. Una orden que entró por webhook no trae
+ * ciudad ni provincia (el canal no las manda), y mandar esos campos vacíos haría
+ * que la API rechace la provincia: no se podría ni pasarla a «Pagada».
  */
 export function toUpdatePayload(
   header: EditHeader,
   lines: EditLine[],
   includeLines: boolean,
+  includeDestination = true,
 ): UpdateOrderPayload {
   const order: UpdateOrderPayload['order'] = {
     customer_name: header.customerName.trim(),
     customer_document: header.customerDocument.trim(),
-    customer_address: header.address.trim(),
-    customer_city: header.city.trim(),
-    customer_province: header.province,
-    customer_zip_code: header.zipCode.trim(),
+    ...(includeDestination
+      ? {
+          customer_address: header.address.trim(),
+          customer_city: header.city.trim(),
+          customer_province: header.province,
+          customer_zip_code: header.zipCode.trim(),
+        }
+      : {}),
     status: header.status,
   }