diff --git a/src/datasources/db/cargobikeAPI.ts b/src/datasources/db/cargobikeAPI.ts
index 6b3ed2d..5cea37d 100644
--- a/src/datasources/db/cargobikeAPI.ts
+++ b/src/datasources/db/cargobikeAPI.ts
@@ -58,7 +58,7 @@ export class CargoBikeAPI extends DataSource {
             .from(CargoBike, 'cargoBike')
             .where('cargoBike.id = :id', { id: cargoBike.id })
             .getOne();
-        if (bike) {
+        if (bike.id) {
             const lendingStationId = cargoBike.lendingStationId;
             delete cargoBike.lendingStationId;
             await this.connection.manager
diff --git a/src/datasources/db/contactinformationAPI.ts b/src/datasources/db/contactinformationAPI.ts
new file mode 100644
index 0000000..d433c2b
--- /dev/null
+++ b/src/datasources/db/contactinformationAPI.ts
@@ -0,0 +1,108 @@
+import { DataSource } from 'apollo-datasource';
+import { Connection, getConnection } from 'typeorm';
+import { ContactInformation } from '../../model/ContactInformation';
+import { ContactPerson } from '../../model/ContactPerson';
+
+export class ContactInformationAPI extends DataSource {
+    connection : Connection
+    constructor () {
+        super();
+        this.connection = getConnection();
+    }
+
+    async contactPersonById (id: number) {
+        return await this.connection.getRepository(ContactPerson)
+            .createQueryBuilder('contactPerson')
+            .select()
+            .where('"contactPerson".id = :id', { id: id })
+            .getOne();
+    }
+
+    async numContactInformationById (id: number) {
+        return await this.connection.getRepository(ContactInformation)
+            .createQueryBuilder('contactInformation')
+            .select()
+            .where('"contactInformation".id = :id', { id: id })
+            .getCount();
+    }
+
+    async contactInformationById (id: number) {
+        return await this.connection.getRepository(ContactInformation)
+            .createQueryBuilder('contactInformation')
+            .select()
+            .where('"contactInformation".id = :id', { id: id })
+            .getOne();
+    }
+
+    async contactPersonByLendingStationId (id: number) {
+        return await this.connection.getRepository(ContactPerson)
+            .createQueryBuilder('contactPerson')
+            .leftJoinAndSelect('contactPerson.lendingStation', 'lendingStation')
+            .where('"lendingStation".id = :id', { id: id })
+            .getMany().catch(() => { return []; });
+    }
+
+    async contactInformationByContactPersonId (id: number) {
+        return (await this.connection.getRepository(ContactPerson)
+            .createQueryBuilder('contactPerson')
+            .leftJoinAndSelect('contactPerson.contactInformation', 'contactInformation')
+            .where('"contactPerson".id = :id', { id: id })
+            .getOne())?.contactInformation;
+    }
+
+    async createContactPerson (contactPerson: any) {
+        if (await this.contactInformationById(contactPerson.contactInformationId)) {
+            const inserts = await this.connection.getRepository(ContactPerson)
+                .createQueryBuilder('contactPerson')
+                .insert()
+                .values([contactPerson])
+                .returning('*')
+                .execute();
+            await this.connection.getRepository(ContactPerson)
+                .createQueryBuilder('contactPerson')
+                .relation(ContactPerson, 'contactInformation')
+                .of(inserts.identifiers[0].id)
+                .set(contactPerson.contactInformationId);
+            return this.contactPersonById(inserts.identifiers[0].id);
+        } else {
+            return null;
+        }
+    }
+
+    async updateContactPerson (contactPerson: any) {
+        if (await this.contactPersonById(contactPerson.id)) {
+            const contactInformationId = contactPerson.contactInformationId;
+            delete contactPerson.contactInformationId;
+            if (contactInformationId) {
+                if (await this.contactInformationById(contactInformationId)) {
+                    await this.connection.getRepository(ContactPerson)
+                        .createQueryBuilder('contactPerson')
+                        .update(ContactPerson)
+                        .set({ ...contactPerson })
+                        .where('id = :id', { id: contactPerson.id })
+                        .execute();
+                    await this.connection.getRepository(ContactPerson)
+                        .createQueryBuilder('contactPerson')
+                        .relation(ContactPerson, 'contactInformation')
+                        .of(contactPerson.id)
+                        .set(contactInformationId);
+                } else {
+                    // supplied contactinformationId not found
+                    return null;
+                }
+                return this.contactPersonById(contactPerson.id);
+            } else {
+                await this.connection.getRepository(ContactPerson)
+                    .createQueryBuilder('contactPerson')
+                    .update(ContactPerson)
+                    .set({ ...contactPerson })
+                    .where('id = :id', { id: contactPerson.id })
+                    .execute();
+                return this.contactPersonById(contactPerson.id);
+            }
+        } else {
+            // updated bike not found
+            return null;
+        }
+    }
+}
diff --git a/src/datasources/db/lendingstationAPI.ts b/src/datasources/db/lendingstationAPI.ts
index dc63848..a84b91c 100644
--- a/src/datasources/db/lendingstationAPI.ts
+++ b/src/datasources/db/lendingstationAPI.ts
@@ -1,7 +1,9 @@
 import { DataSource } from 'apollo-datasource';
 import { GraphQLError } from 'graphql';
 import { Connection, getConnection } from 'typeorm';
+import { CargoBike } from '../../model/CargoBike';
 import { LendingStation } from '../../model/LendingStation';
+import { TimeFrame } from '../../model/TimeFrame';
 
 export class LendingStationAPI extends DataSource {
     connection : Connection
@@ -22,13 +24,48 @@ export class LendingStationAPI extends DataSource {
     /**
      * get all lendingStations
      */
-    async getLendingStations () {
-        return await this.connection.manager
-            .createQueryBuilder(LendingStation, 'lendingStation')
-            .leftJoinAndSelect('CargoBike', 'cargoBike', 'cargoBike.lendingStation = lendingStation.id')// ('lendingStation.cargoBikes', 'cargoBike.lendingStation', 'cargoBike', 'cargoBike.lendingStationId = lendingStation.id')
+    async lendingStations (offset: number, limit: number) {
+        return await this.connection.getRepository(LendingStation)
+            .createQueryBuilder('lendingStation')
+            .select()
+            .offset(offset)
+            .limit(limit)
+            .orderBy('name', 'ASC')
             .getMany() || new GraphQLError('Internal Server Error: could not query data from table lendingStation');
     }
 
+    async lendingStationByCargoBikeId (id: number) {
+        return await this.connection.getRepository(LendingStation)
+            .createQueryBuilder('lendingStation')
+            .leftJoinAndSelect('lendingStation.cargoBikes', 'cargoBikes')
+            .where('"cargoBikes"."lendingStationId" = :id', { id: id })
+            .getOne().catch(() => { return null; });
+    }
+
+    async timeFramesByLendingStationId (id: number) {
+        return await this.connection.getRepository(TimeFrame)
+            .createQueryBuilder('timeFrame')
+            .select()
+            .where('"timeFrame"."lendingStationId" = :id', { id: id })
+            .getMany().catch(() => { return []; });
+    }
+
+    async numCargoBikesByLendingStationId (id: number) {
+        return await this.connection.getRepository(CargoBike)
+            .createQueryBuilder('cargoBike')
+            .select()
+            .where('"cargoBike"."lendingStationId" = :id', { id: id })
+            .getCount();
+    }
+
+    async cargoBikesByLendingStationId (id: number) {
+        return await this.connection.getRepository(CargoBike)
+            .createQueryBuilder('cargoBike')
+            .select()
+            .where('"cargoBike"."lendingStationId" = :id', { id: id })
+            .getMany().catch(() => { return []; });
+    }
+
     /**
      * creates new lendingStation and returns new lendingStation with its new id
      * @param param0 new lendingStation
diff --git a/src/datasources/db/providerAPI.ts b/src/datasources/db/providerAPI.ts
new file mode 100644
index 0000000..8bbfd4a
--- /dev/null
+++ b/src/datasources/db/providerAPI.ts
@@ -0,0 +1,19 @@
+import { DataSource } from 'apollo-datasource';
+import { Connection, getConnection } from 'typeorm';
+import { Provider } from '../../model/Provider';
+
+export class ProviderAPI extends DataSource {
+    connection : Connection
+    constructor () {
+        super();
+        this.connection = getConnection();
+    }
+
+    async providerById (id: number) {
+        await this.connection.getRepository(Provider)
+            .createQueryBuilder('provider')
+            .select()
+            .where('provider.id = :id', { id: id })
+            .getOne().catch(() => { return null; });
+    }
+}
diff --git a/src/index.ts b/src/index.ts
index f541541..4f9bb18 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -13,7 +13,7 @@ import { BikeModel } from './model/BikeModel';
 import { ContactInformation } from './model/ContactInformation';
 import { Equipment } from './model/Equipment';
 import { LendingStation } from './model/LendingStation';
-import { LoanPeriod } from './model/LoanPeriod';
+import { TimeFrame } from './model/TimeFrame';
 import { Participant } from './model/Participant';
 import { Organization } from './model/Organization';
 import { Provider } from './model/Provider';
@@ -24,6 +24,10 @@ import lendingstationResolvers from './resolvers/lendingstationResolvers';
 import { ParticipantAPI } from './datasources/db/participantAPI';
 import participantResolvers from './resolvers/participantResolvers';
 import { ContactPerson } from './model/ContactPerson';
+import { ContactInformationAPI } from './datasources/db/contactinformationAPI';
+import providerResolvers from './resolvers/providerResolvers';
+import { ProviderAPI } from './datasources/db/providerAPI';
+import contactinformationResolvers from './resolvers/contactinformationResolvers';
 
 require('dotenv').config();
 
@@ -64,7 +68,7 @@ createConnection({
         ContactInformation,
         Equipment,
         LendingStation,
-        LoanPeriod,
+        TimeFrame,
         Organization,
         Participant,
         Provider,
@@ -84,13 +88,17 @@ const server = new ApolloServer({
     resolvers: [
         bikeresolver,
         lendingstationResolvers,
-        participantResolvers
+        participantResolvers,
+        providerResolvers,
+        contactinformationResolvers
     ],
     typeDefs,
     dataSources: () => ({
         cargoBikeAPI: new CargoBikeAPI(),
         lendingStationAPI: new LendingStationAPI(),
         participantAPI: new ParticipantAPI(),
+        contactInformationAPI: new ContactInformationAPI(),
+        providerAPI: new ProviderAPI(),
         userAPI
     }),
     context: (req: any) => {
diff --git a/src/model/CargoBike.ts b/src/model/CargoBike.ts
index baeddc1..5adc52b 100644
--- a/src/model/CargoBike.ts
+++ b/src/model/CargoBike.ts
@@ -4,7 +4,7 @@ import { Bike } from './BikeFeatures';
 import { Provider } from './Provider';
 import { Participant } from './Participant';
 import { InsuranceData } from './InsuranceData';
-import { LoanPeriod } from './LoanPeriod';
+import { TimeFrame } from './TimeFrame';
 import { LendingStation } from './LendingStation';
 import { Taxes } from './Taxes';
 import { Equipment } from './Equipment';
@@ -118,10 +118,10 @@ export class CargoBike extends Bike {
     @Column(type => InsuranceData)
     insuranceData: InsuranceData;
 
-    @OneToMany(type => LoanPeriod, loanPeriod => loanPeriod.cargoBike, {
+    @OneToMany(type => TimeFrame, loanPeriod => loanPeriod.cargoBike, {
         nullable: true
     })
-    loanPeriods: LoanPeriod[];
+    loanPeriods: TimeFrame[];
 
     // This relation is a little redundant because one could also check all LoanPeriods for current station
     @ManyToOne(type => LendingStation, lendingStation => lendingStation.cargoBikes, {
diff --git a/src/model/LendingStation.ts b/src/model/LendingStation.ts
index 9186739..08db24c 100644
--- a/src/model/LendingStation.ts
+++ b/src/model/LendingStation.ts
@@ -1,5 +1,5 @@
 import { Entity, PrimaryGeneratedColumn, Column, ManyToMany, JoinTable, OneToMany, ManyToOne } from 'typeorm';
-import { LoanPeriod } from './LoanPeriod';
+import { TimeFrame } from './TimeFrame';
 import { CargoBike } from './CargoBike';
 import { Organization } from './Organization';
 import { Address } from './Provider';
@@ -20,8 +20,26 @@ export class LendingStation {
     @Column(type => Address)
     address: Address;
 
-    @OneToMany(type => LoanPeriod, loanPeriod => loanPeriod.lendingStation)
-    loanPeriods: LoanPeriod[];
+    /**
+     * validity for loanPeriods
+     */
+    @Column({
+        nullable: true,
+        type: 'date'
+    })
+    from: Date;
+
+    /**
+     * validity for loanPeriods
+     */
+    @Column({
+        nullable: true,
+        type: 'date'
+    })
+    to: Date;
+
+    @OneToMany(type => TimeFrame, loanPeriod => loanPeriod.lendingStation)
+    loanPeriods: TimeFrame[];
 
     @OneToMany(type => CargoBike, cargoBike => cargoBike.lendingStation, {
         eager: false
diff --git a/src/model/LoanPeriod.ts b/src/model/TimeFrame.ts
similarity index 89%
rename from src/model/LoanPeriod.ts
rename to src/model/TimeFrame.ts
index 03f6245..78115da 100644
--- a/src/model/LoanPeriod.ts
+++ b/src/model/TimeFrame.ts
@@ -2,8 +2,11 @@ import { Entity, PrimaryGeneratedColumn, Column, ManyToOne } from 'typeorm';
 import { LendingStation } from './LendingStation';
 import { CargoBike } from './CargoBike';
 
+/**
+ * When was a cargoBike at what lendingStation
+ */
 @Entity()
-export class LoanPeriod {
+export class TimeFrame {
     @PrimaryGeneratedColumn()
     id: number;
 
diff --git a/src/resolvers/cargobikeResolver.ts b/src/resolvers/cargobikeResolver.ts
index 590753c..0a2b70b 100644
--- a/src/resolvers/cargobikeResolver.ts
+++ b/src/resolvers/cargobikeResolver.ts
@@ -48,6 +48,9 @@ export default {
         },
         equipment (parent: any, { offset, limit }: { offset: number, limit: number }, { dataSources, req }: { dataSources: any, req: any }) {
             return dataSources.cargoBikeAPI.equipmentByCargoBikeId(offset, limit, parent.id);
+        },
+        lendingStation (parent: any, __: any, { dataSources, req }: { dataSources: any, req: any }) {
+            return dataSources.lendingStationAPI.lendingStationByCargoBikeId(parent.id);
         }
     },
     Equipment: {
diff --git a/src/resolvers/contactinformationResolvers.ts b/src/resolvers/contactinformationResolvers.ts
new file mode 100644
index 0000000..7c7eb72
--- /dev/null
+++ b/src/resolvers/contactinformationResolvers.ts
@@ -0,0 +1,30 @@
+import { GraphQLError } from 'graphql';
+import { Permission } from '../datasources/userserver/permission';
+
+export default {
+    ContactPerson: {
+        contactInformation: (parent: any, __: any, { dataSources, req }: { dataSources: any, req: any }) => {
+            if (req.permissions.includes(Permission.ReadBike)) {
+                return dataSources.contactInformationAPI.contactInformationByContactPersonId(parent.id);
+            } else {
+                return new GraphQLError('Insufficient Permissions');
+            }
+        }
+    },
+    Mutation: {
+        createContactPerson: (_: any, { contactPerson }: { contactPerson: any }, { dataSources, req }: { dataSources: any, req: any }) => {
+            if (req.permissions.includes(Permission.WriteBike)) {
+                return dataSources.contactInformationAPI.createContactPerson(contactPerson);
+            } else {
+                return new GraphQLError('Insufficient Permissions');
+            }
+        },
+        updateContactPerson: (_: any, { contactPerson }: { contactPerson: any }, { dataSources, req }: { dataSources: any, req: any }) => {
+            if (req.permissions.includes(Permission.WriteBike)) {
+                return dataSources.contactInformationAPI.updateContactPerson(contactPerson);
+            } else {
+                return new GraphQLError('Insufficient Permissions');
+            }
+        }
+    }
+};
diff --git a/src/resolvers/lendingstationResolvers.ts b/src/resolvers/lendingstationResolvers.ts
index 20cc5fe..3682c0c 100644
--- a/src/resolvers/lendingstationResolvers.ts
+++ b/src/resolvers/lendingstationResolvers.ts
@@ -11,14 +11,28 @@ export default {
                 return new GraphQLError('Insufficient Permissions');
             }
         },
-        lendingStations: (_: any, __: any, { dataSources, req }: { dataSources: any, req: any }) => {
+        lendingStations: (_: any, { offset, limit }: { offset: number, limit: number }, { dataSources, req }: { dataSources: any, req: any }) => {
             if (req.permissions.includes(Permission.ReadBike)) {
-                return dataSources.lendingStationAPI.getLendingStations();
+                return dataSources.lendingStationAPI.lendingStations(offset, limit);
             } else {
                 return new GraphQLError('Insufficient Permissions');
             }
         }
     },
+    LendingStation: {
+        contactPersons (parent: any, __: any, { dataSources, req }: { dataSources: any, req: any }) {
+            return dataSources.contactInformationAPI.contactPersonByLendingStationId(parent.id);
+        },
+        timeFrames (parent: any, __: any, { dataSources, req }: { dataSources: any, req: any }) {
+            return dataSources.lendingStationAPI.timeFramesByLendingStationId(parent.id);
+        },
+        numCargoBikes (parent: any, __: any, { dataSources, req }: { dataSources: any, req: any }) {
+            return dataSources.lendingStationAPI.numCargoBikesByLendingStationId(parent.id);
+        },
+        cargoBikes (parent: any, __: any, { dataSources, req }: { dataSources: any, req: any }) {
+            return dataSources.lendingStationAPI.cargoBikesByLendingStationId(parent.id);
+        }
+    },
     Mutation: {
         createLendingStation: (_: any, { lendingStation }:{ lendingStation: LendingStation }, { dataSources, req }:{dataSources: any, req: any }) => {
             if (req.permissions.includes(Permission.WriteBike)) {
diff --git a/src/resolvers/participantResolvers.ts b/src/resolvers/participantResolvers.ts
index 3172997..c7b1ec5 100644
--- a/src/resolvers/participantResolvers.ts
+++ b/src/resolvers/participantResolvers.ts
@@ -23,7 +23,7 @@ export default {
             return dataSources.participantAPI.engagementByParticipantId(parent.id);
         },
         contactInformation (parent: any, _: any, { dataSources, req }: { dataSources: any, req: any }) {
-            return (dataSources.participantAPI.contactInformationByParticipantId(parent.id));
+            return (dataSources.contactInformationAPI.contactInformationByParticipantId(parent.id));
         }
     },
     Engagement: {
diff --git a/src/resolvers/providerResolvers.ts b/src/resolvers/providerResolvers.ts
new file mode 100644
index 0000000..1bcc659
--- /dev/null
+++ b/src/resolvers/providerResolvers.ts
@@ -0,0 +1,16 @@
+import { GraphQLError } from 'graphql';
+import { Permission } from '../datasources/userserver/permission';
+
+export default {
+    Query: {
+        providerById: (_: any, { id }: { id: number, limit: number }, { dataSources, req }: { dataSources: any, req: any }) => {
+            if (req.permissions.includes(Permission.ReadBike)) {
+                return dataSources.providerAPI.providerById(id);
+            } else {
+                return new GraphQLError('Insufficient Permissions');
+            }
+        }
+    },
+    Mutation: {
+    }
+};
diff --git a/src/schema/type-defs.ts b/src/schema/type-defs.ts
index fdd6a1d..f6e8275 100644
--- a/src/schema/type-defs.ts
+++ b/src/schema/type-defs.ts
@@ -550,23 +550,21 @@ input ContactInformationUpdateInput {
     note: String
 }
 
-type contactPerson {
+type ContactPerson {
     id: ID!
     intern: Boolean!
     contactInformation: ContactInformation!
 }
 
-input contactPersonCreateInput {
+input ContactPersonCreateInput {
     intern: Boolean!
-    contactInformationCreate: ContactInformationCreateInput
-    contactInformationExisting: ContactInformationUpdateInput
+    contactInformationId: ID!
 }
 
-input contactPersonUpdateInput {
+input ContactPersonUpdateInput {
     id: ID!
     intern: Boolean
-    contactInformationCreate: ContactInformationCreateInput
-    contactInformationExisting: ContactInformationUpdateInput
+    contactInformationId: ID
 }
 
 type Organisation {
@@ -586,10 +584,10 @@ type Organisation {
 type LendingStation {
     id: ID!
     name: String!
-    contactInformation: [ContactInformation]!
+    contactPersons: [ContactPerson]!
     address: Address!
-    loanTimes: LoanTimes
-    loanPeriods: [LoanPeriod]!
+    timeFrames: [TimeFrame]!
+    loanPeriods: LoanPeriods
     cargoBikes: [CargoBike]
     "Totola Amount of cargoBikes currently assigned to the lending station"
     numCargoBikes: Int!
@@ -599,8 +597,8 @@ input LendingStationCreateInput {
     name: String!
     contactInformation: [ContactInformationCreateInput]!
     address: AddressCreateInput!
-    loanTimes: LoanTimesInput
-    loanPeriods: [LoanPeriodCreateInput]!
+    loanPeriods: LoanPeriodsInput
+    timeFrames: [TimeFrameCreateInput]!
 }
 
 input LendingStationUpdateInput {
@@ -608,15 +606,15 @@ input LendingStationUpdateInput {
     name: String
     contactInformation: [ContactInformationUpdateInput]
     address: AddressUpdateInput
-    loanTimes: LoanTimesInput
-    loanPeriods: [LoanPeriodUpdateInput]
+    loanPeriods: LoanPeriodsInput
+    timeFrames: [TimeFrameUpdateInput]
     
 }
 
 """
-(dt. Ausleihzeiten)
+(dt. Ausleihzeiten) not implemented
 """
-type LoanTimes {
+type LoanPeriods {
     generalRemark: String
     "notes for each day of the week, starting on Monday"
     notes: [String]
@@ -630,7 +628,7 @@ type LoanTimes {
 """
 (dt. Ausleihzeiten)
 """
-input LoanTimesInput {
+input LoanPeriodsInput {
     generalRemark: String
     "notes for each day of the week, starting on Monday"
     notes: [String]
@@ -641,9 +639,8 @@ input LoanTimesInput {
     times: [String]
 }
 
-
 "(dt. Zeitscheibe)"
-type LoanPeriod {
+type TimeFrame {
     id: ID!
     from: Date!
     to: Date
@@ -652,7 +649,7 @@ type LoanPeriod {
     cargoBike: CargoBike!
 }
 
-input LoanPeriodCreateInput {
+input TimeFrameCreateInput {
     from: Date
     to: Date
     note: String
@@ -660,7 +657,7 @@ input LoanPeriodCreateInput {
     cargoBikeID: CargoBikeCreateInput
 }
 
-input LoanPeriodUpdateInput {
+input TimeFrameUpdateInput {
     id: ID!
     from: Date
     to: Date
@@ -692,7 +689,7 @@ type Query {
     cargoBikeById(id:ID!): CargoBike
     "returns cargoBikes ordered by name ascending, relations are not loaded, use cargoBikeById instead"
     cargoBikes(offset: Int!, limit: Int!): [CargoBike]!
-    "not important, you can just use providerById {cargoBikes}"
+    "return null if id not found"
     providerById(id:ID!): Provider
     "unique equipment with pagination, contains relation to bike (with no further joins), so if you wanna know more about the bike, use cargoBikeById"
     equipment(offset: Int!, limit: Int!): [Equipment]!
@@ -704,7 +701,7 @@ type Query {
     "p"
     participants(offset: Int!, limit: Int!): [ Participant]!
     lendingStationById(id:ID!): LendingStation
-    lendingStations: [LendingStation]!
+    lendingStations(offset: Int!, limit: Int!): [LendingStation]!
     contactInformation: [ContactInformation]!
     "returns BikeEvent with CargoBike"
     bikeEventById(id:ID!): BikeEvent!
@@ -715,7 +712,7 @@ type Mutation {
     createCargoBike(cargoBike: CargoBikeCreateInput!): CargoBike!
     "updates cargoBike of given ID with supplied fields and returns updated cargoBike"
     updateCargoBike(cargoBike: CargoBikeUpdateInput!): CargoBike!
-    "creates new peace of unique Equipment, the returned Equipment will contain a cargoBike, but that cargoBike will not contain equipment"
+    "creates new peace of unique Equipment"
     createEquipment(equipment: EquipmentCreateInput!): Equipment!
     "update Equipment, returns updated equipment. CargoBike will be null, if cargoBikeId is not set. Pass null for cargoBikeIs to delete the relation"
     updateEquipment(equipment: EquipmentUpdateInput!): Equipment!
@@ -731,6 +728,10 @@ type Mutation {
     createContactInformation(contactInformation: ContactInformationCreateInput!): ContactInformation!
     "create Engagement"
     createEngagement(engagement: EngagementCreateInput): Engagement!
+    "createContacPerson ,return null if contactInformationId does not exist"
+    createContactPerson(contactPerson: ContactPersonCreateInput): ContactPerson
+    updateContactPerson(contactPerson: ContactPersonUpdateInput): ContactPerson
+    
 }
 
 `;