diff --git a/apps/admin-ui/gql/gql-types.ts b/apps/admin-ui/gql/gql-types.ts
index 2f57bd3b9..e758cb9ff 100644
--- a/apps/admin-ui/gql/gql-types.ts
+++ b/apps/admin-ui/gql/gql-types.ts
@@ -2765,7 +2765,6 @@ export type ReservationConfirmMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -2804,7 +2803,6 @@ export type ReservationCreateMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<Scalars["String"]["input"]>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -2844,7 +2842,6 @@ export type ReservationCreateMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -3291,7 +3288,6 @@ export type ReservationSeriesReservationCreateSerializerInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<ReserveeLanguage>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -3371,7 +3367,6 @@ export type ReservationStaffCreateMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<Scalars["String"]["input"]>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -3415,7 +3410,6 @@ export type ReservationStaffCreateMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -3451,7 +3445,6 @@ export type ReservationStaffModifyMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<ReserveeLanguage>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -3493,7 +3486,6 @@ export type ReservationStaffModifyMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<ReserveeLanguage>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -4372,7 +4364,6 @@ export type ReservationUpdateMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<Scalars["String"]["input"]>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -4413,7 +4404,6 @@ export type ReservationUpdateMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -4435,17 +4425,6 @@ export type ReservationWorkingMemoMutationPayload = {
   workingMemo?: Maybe<Scalars["String"]["output"]>;
 };
 
-/** An enumeration. */
-export enum ReserveeLanguage {
-  A = "A_",
-  /** Englanti */
-  En = "EN",
-  /** Suomi */
-  Fi = "FI",
-  /** Ruotsi */
-  Sv = "SV",
-}
-
 /** An enumeration. */
 export enum ReserveeType {
   /** Yritys */
@@ -5200,7 +5179,6 @@ export type UpdateReservationSeriesReservationUpdateSerializerInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<ReserveeLanguage>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
diff --git a/apps/ui/gql/gql-types.ts b/apps/ui/gql/gql-types.ts
index 1847a9d22..a0ae1bdbd 100644
--- a/apps/ui/gql/gql-types.ts
+++ b/apps/ui/gql/gql-types.ts
@@ -2765,7 +2765,6 @@ export type ReservationConfirmMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -2804,7 +2803,6 @@ export type ReservationCreateMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<Scalars["String"]["input"]>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -2844,7 +2842,6 @@ export type ReservationCreateMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -3291,7 +3288,6 @@ export type ReservationSeriesReservationCreateSerializerInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<ReserveeLanguage>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -3371,7 +3367,6 @@ export type ReservationStaffCreateMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<Scalars["String"]["input"]>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -3415,7 +3410,6 @@ export type ReservationStaffCreateMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -3451,7 +3445,6 @@ export type ReservationStaffModifyMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<ReserveeLanguage>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -3493,7 +3486,6 @@ export type ReservationStaffModifyMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<ReserveeLanguage>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -4372,7 +4364,6 @@ export type ReservationUpdateMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<Scalars["String"]["input"]>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -4413,7 +4404,6 @@ export type ReservationUpdateMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -4435,17 +4425,6 @@ export type ReservationWorkingMemoMutationPayload = {
   workingMemo?: Maybe<Scalars["String"]["output"]>;
 };
 
-/** An enumeration. */
-export enum ReserveeLanguage {
-  A = "A_",
-  /** Englanti */
-  En = "EN",
-  /** Suomi */
-  Fi = "FI",
-  /** Ruotsi */
-  Sv = "SV",
-}
-
 /** An enumeration. */
 export enum ReserveeType {
   /** Yritys */
@@ -5200,7 +5179,6 @@ export type UpdateReservationSeriesReservationUpdateSerializerInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<ReserveeLanguage>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
diff --git a/apps/ui/pages/reservation-unit/[...params].tsx b/apps/ui/pages/reservation-unit/[...params].tsx
index 4e77f1809..6ad130106 100644
--- a/apps/ui/pages/reservation-unit/[...params].tsx
+++ b/apps/ui/pages/reservation-unit/[...params].tsx
@@ -265,7 +265,6 @@ function NewReservation(props: PropsNarrowed): JSX.Element | null {
           input: {
             pk: reservationPk ?? 0,
             ...input,
-            reserveeLanguage: i18n.language,
           },
         },
       });
diff --git a/packages/common/gql/gql-types.ts b/packages/common/gql/gql-types.ts
index 4e263124a..b6ee2b9de 100644
--- a/packages/common/gql/gql-types.ts
+++ b/packages/common/gql/gql-types.ts
@@ -2765,7 +2765,6 @@ export type ReservationConfirmMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -2804,7 +2803,6 @@ export type ReservationCreateMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<Scalars["String"]["input"]>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -2844,7 +2842,6 @@ export type ReservationCreateMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -3291,7 +3288,6 @@ export type ReservationSeriesReservationCreateSerializerInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<ReserveeLanguage>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -3371,7 +3367,6 @@ export type ReservationStaffCreateMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<Scalars["String"]["input"]>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -3415,7 +3410,6 @@ export type ReservationStaffCreateMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -3451,7 +3445,6 @@ export type ReservationStaffModifyMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<ReserveeLanguage>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -3493,7 +3486,6 @@ export type ReservationStaffModifyMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<ReserveeLanguage>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -4372,7 +4364,6 @@ export type ReservationUpdateMutationInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<Scalars["String"]["input"]>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
@@ -4413,7 +4404,6 @@ export type ReservationUpdateMutationPayload = {
   reserveeFirstName?: Maybe<Scalars["String"]["output"]>;
   reserveeId?: Maybe<Scalars["String"]["output"]>;
   reserveeIsUnregisteredAssociation?: Maybe<Scalars["Boolean"]["output"]>;
-  reserveeLanguage?: Maybe<Scalars["String"]["output"]>;
   reserveeLastName?: Maybe<Scalars["String"]["output"]>;
   reserveeOrganisationName?: Maybe<Scalars["String"]["output"]>;
   reserveePhone?: Maybe<Scalars["String"]["output"]>;
@@ -4435,17 +4425,6 @@ export type ReservationWorkingMemoMutationPayload = {
   workingMemo?: Maybe<Scalars["String"]["output"]>;
 };
 
-/** An enumeration. */
-export enum ReserveeLanguage {
-  A = "A_",
-  /** Englanti */
-  En = "EN",
-  /** Suomi */
-  Fi = "FI",
-  /** Ruotsi */
-  Sv = "SV",
-}
-
 /** An enumeration. */
 export enum ReserveeType {
   /** Yritys */
@@ -5200,7 +5179,6 @@ export type UpdateReservationSeriesReservationUpdateSerializerInput = {
   reserveeFirstName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeId?: InputMaybe<Scalars["String"]["input"]>;
   reserveeIsUnregisteredAssociation?: InputMaybe<Scalars["Boolean"]["input"]>;
-  reserveeLanguage?: InputMaybe<ReserveeLanguage>;
   reserveeLastName?: InputMaybe<Scalars["String"]["input"]>;
   reserveeOrganisationName?: InputMaybe<Scalars["String"]["input"]>;
   reserveePhone?: InputMaybe<Scalars["String"]["input"]>;
diff --git a/tilavaraus.graphql b/tilavaraus.graphql
index 4eeccb366..87878f671 100644
--- a/tilavaraus.graphql
+++ b/tilavaraus.graphql
@@ -2989,7 +2989,6 @@ type ReservationConfirmMutationPayload {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: String
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String
@@ -3028,7 +3027,6 @@ input ReservationCreateMutationInput {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: String
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String
@@ -3068,7 +3066,6 @@ type ReservationCreateMutationPayload {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: String
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String
@@ -3587,7 +3584,6 @@ input ReservationSeriesReservationCreateSerializerInput {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: ReserveeLanguage
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String
@@ -3679,7 +3675,6 @@ input ReservationStaffCreateMutationInput {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: String
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String
@@ -3727,7 +3722,6 @@ type ReservationStaffCreateMutationPayload {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: String
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String
@@ -3763,7 +3757,6 @@ input ReservationStaffModifyMutationInput {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: ReserveeLanguage
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String
@@ -3805,7 +3798,6 @@ type ReservationStaffModifyMutationPayload {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: ReserveeLanguage
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String
@@ -4764,7 +4756,6 @@ input ReservationUpdateMutationInput {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: String
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String
@@ -4805,7 +4796,6 @@ type ReservationUpdateMutationPayload {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: String
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String
@@ -4831,25 +4821,6 @@ type ReservationWorkingMemoMutationPayload {
   workingMemo: String
 }
 
-"""
-An enumeration.
-"""
-enum ReserveeLanguage {
-  A_
-  """
-  Englanti
-  """
-  EN
-  """
-  Suomi
-  """
-  FI
-  """
-  Ruotsi
-  """
-  SV
-}
-
 """
 An enumeration.
 """
@@ -5745,7 +5716,6 @@ input UpdateReservationSeriesReservationUpdateSerializerInput {
   reserveeFirstName: String
   reserveeId: String
   reserveeIsUnregisteredAssociation: Boolean
-  reserveeLanguage: ReserveeLanguage
   reserveeLastName: String
   reserveeOrganisationName: String
   reserveePhone: String