diff --git a/orchestration/abri_orchestrator.py b/orchestration/abri_orchestrator.py
index 397bc9d77..d4b61b8ba 100644
--- a/orchestration/abri_orchestrator.py
+++ b/orchestration/abri_orchestrator.py
@@ -128,6 +128,15 @@ class DealDatabaseGateway(Protocol):
     def job_no_for_deal(self, deal_id: str) -> Optional[str]: ...
 
 
+@dataclass(frozen=True)
+class AppointmentChange:
+    """The deal fields a changed survey booking contributes to an AmendJob."""
+
+    deal_id: str
+    confirmed_survey_date: date
+    confirmed_survey_time: Optional[str]
+
+
 AmendJobOrchestrationResult = Union[AppointmentAmended, AbriRequestRejected]
 
 
@@ -230,19 +239,17 @@ class AbriOrchestrator:
             ),
         )
 
-    def amend_job(
-        self, booking: ConfirmedSurveyBooking
-    ) -> AmendJobOrchestrationResult:
-        job_no = self._deal_database.job_no_for_deal(booking.deal_id)
+    def amend_job(self, change: AppointmentChange) -> AmendJobOrchestrationResult:
+        job_no = self._deal_database.job_no_for_deal(change.deal_id)
         if job_no is None:
-            raise JobNoNotYetRecordedError(deal_id=booking.deal_id)
+            raise JobNoNotYetRecordedError(deal_id=change.deal_id)
 
         return self._abri.amend_job(
             AmendJobRequest(
                 job_no=job_no,
-                appointment_date=booking.confirmed_survey_date,
+                appointment_date=change.confirmed_survey_date,
                 appointment_time=slot_for_confirmed_time(
-                    booking.confirmed_survey_time
+                    change.confirmed_survey_time
                 ),
             )
         )
diff --git a/tests/orchestration/test_abri_orchestrator_amend_job.py b/tests/orchestration/test_abri_orchestrator_amend_job.py
index 44b984c2a..f5ba20e57 100644
--- a/tests/orchestration/test_abri_orchestrator_amend_job.py
+++ b/tests/orchestration/test_abri_orchestrator_amend_job.py
@@ -6,14 +6,14 @@ from unittest.mock import MagicMock, patch
 
 import pytest
 
-from domain.abri.models import AbriRequestRejected, AppointmentAmended, PlaceRef
+from domain.abri.models import AbriRequestRejected, AppointmentAmended
 from infrastructure.abri.abri_client import AbriClient
 from infrastructure.abri.config import AbriConfig
 from infrastructure.hubspot.deal_contacts_client import HubspotDealContactsClient
 from infrastructure.hubspot.deal_properties_client import HubspotDealPropertiesClient
 from orchestration.abri_orchestrator import (
     AbriOrchestrator,
-    ConfirmedSurveyBooking,
+    AppointmentChange,
     JobNoNotYetRecordedError,
 )
 
@@ -29,10 +29,8 @@ CONFIG = AbriConfig(
     default_resource="NAULKH",
 )
 
-BOOKING = ConfirmedSurveyBooking(
+CHANGE = AppointmentChange(
     deal_id=DEAL_ID,
-    place_ref=PlaceRef("1007165"),
-    deal_name="49 Admers Crescent",
     confirmed_survey_date=date(2026, 6, 24),
     confirmed_survey_time="14:30",
 )
@@ -101,7 +99,7 @@ def test_amend_job_sends_an_amendoptiappt_envelope_for_the_deals_recorded_job(
     )
 
     # Act
-    orchestrator.amend_job(BOOKING)
+    orchestrator.amend_job(CHANGE)
 
     # Assert
     (url,) = mock_session.post.call_args.args
@@ -134,7 +132,7 @@ def test_amend_job_returns_the_amended_appointment(
     )
 
     # Act
-    result = orchestrator.amend_job(BOOKING)
+    result = orchestrator.amend_job(CHANGE)
 
     # Assert
     assert result == AppointmentAmended(
@@ -153,7 +151,7 @@ def test_amend_job_raises_a_retriable_error_when_no_job_no_has_been_recorded(
 ) -> None:
     # Act / Assert
     with pytest.raises(JobNoNotYetRecordedError):
-        orchestrator.amend_job(BOOKING)
+        orchestrator.amend_job(CHANGE)
     assert mock_session.post.call_count == 0
 
 
@@ -172,7 +170,7 @@ def test_amend_job_returns_the_openhousing_rejection_verbatim(
     )
 
     # Act
-    result = orchestrator.amend_job(BOOKING)
+    result = orchestrator.amend_job(CHANGE)
 
     # Assert
     assert isinstance(result, AbriRequestRejected)