diff --git a/src/main/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemEntityPatcher.java b/src/main/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemEntityPatcher.java
index 2131bef5..24f2f41c 100644
--- a/src/main/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemEntityPatcher.java
+++ b/src/main/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemEntityPatcher.java
@@ -22,8 +22,6 @@ public class HsBookingItemEntityPatcher implements EntityPatcher<HsBookingItemPa
                 .ifPresent(entity::setCaption);
         Optional.ofNullable(resource.getResources())
                 .ifPresent(r -> entity.getResources().patch(KeyValueMap.from(resource.getResources())));
-        OptionalFromJson.of(resource.getValidFrom())
-                .ifPresent(entity::setValidFrom);
         OptionalFromJson.of(resource.getValidTo())
                 .ifPresent(entity::setValidTo);
     }
diff --git a/src/main/resources/api-definition/hs-booking/hs-booking-item-schemas.yaml b/src/main/resources/api-definition/hs-booking/hs-booking-item-schemas.yaml
index 7424a46e..bf64d994 100644
--- a/src/main/resources/api-definition/hs-booking/hs-booking-item-schemas.yaml
+++ b/src/main/resources/api-definition/hs-booking/hs-booking-item-schemas.yaml
@@ -32,10 +32,6 @@ components:
                 caption:
                     type: string
                     nullable: true
-                validFrom:
-                    type: string
-                    format: date
-                    nullable: true
                 validTo:
                     type: string
                     format: date
diff --git a/src/test/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemControllerAcceptanceTest.java b/src/test/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemControllerAcceptanceTest.java
index fa4ce211..55bdbb2c 100644
--- a/src/test/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemControllerAcceptanceTest.java
+++ b/src/test/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemControllerAcceptanceTest.java
@@ -258,7 +258,7 @@ class HsBookingItemControllerAcceptanceTest extends ContextBasedTestWithCleanup
                     .body("", lenientlyEquals("""
                         {
                             "caption": "some test-booking",
-                            "validFrom": "2020-06-05",
+                            "validFrom": "2022-11-01",
                             "validTo": "2022-12-31",
                             "resources": {
                                 "CPU": "4",
diff --git a/src/test/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemEntityPatcherUnitTest.java b/src/test/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemEntityPatcherUnitTest.java
index 7e7f4308..b7ff8ab4 100644
--- a/src/test/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemEntityPatcherUnitTest.java
+++ b/src/test/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemEntityPatcherUnitTest.java
@@ -34,7 +34,6 @@ class HsBookingItemEntityPatcherUnitTest extends PatchUnitTestBase<
 
     private static final UUID INITIAL_BOOKING_ITEM_UUID = UUID.randomUUID();
     private static final LocalDate GIVEN_VALID_FROM = LocalDate.parse("2020-04-15");
-    private static final LocalDate PATCHED_VALID_FROM = LocalDate.parse("2022-10-30");
     private static final LocalDate PATCHED_VALID_TO = LocalDate.parse("2022-12-31");
 
     private static final Map<String, Object> INITIAL_RESOURCES = patchMap(
@@ -103,11 +102,6 @@ class HsBookingItemEntityPatcherUnitTest extends PatchUnitTestBase<
                         HsBookingItemEntity::putResources,
                         PATCHED_RESOURCES)
                         .notNullable(),
-                new JsonNullableProperty<>(
-                        "validfrom",
-                        HsBookingItemPatchResource::setValidFrom,
-                        PATCHED_VALID_FROM,
-                        HsBookingItemEntity::setValidFrom),
                 new JsonNullableProperty<>(
                         "validto",
                         HsBookingItemPatchResource::setValidTo,