diff --git a/dist/index.test.js b/dist/index.test.js
index 894a4fe..9ec6533 100644
--- a/dist/index.test.js
+++ b/dist/index.test.js
@@ -46,7 +46,7 @@ describe('index', () => {
             privateKey = priv;
             dataRequest = {
                 healthDepartment: 'Test Health Department',
-                keyOfHealthDepartment: publicKey,
+                key: Buffer.from(publicKey, 'utf-8').toString('base64'),
                 keyReferenz: 'random-string-keyref',
                 start: '2011-10-05T14:48:00.000Z',
                 end: '2021-10-05T14:48:00.000Z',
@@ -67,7 +67,7 @@ describe('index', () => {
             end: '2021-10-05T14:48:00.000Z',
         });
         expect(mockedAxios.get).toHaveBeenCalledWith('/data-requests/12345-abcde');
-        mockedAxios.post.mockResolvedValue({ status: 200, data: { success: true } });
+        mockedAxios.post.mockResolvedValue({ status: 201, data: { success: true } });
         await iris.sendContactsEvents('12345-abcde', submission, {
             firstName: 'Hans',
             lastName: 'Müller',
diff --git a/dist/index.test.js.map b/dist/index.test.js.map
index ae4eb6b..cd9a59f 100644
--- a/dist/index.test.js.map
+++ b/dist/index.test.js.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"index.test.js","sourceRoot":"","sources":["../src/index.test.ts"],"names":[],"mappings":";;AAAA,iCAA0B;AAC1B,iCAAiC;AAEjC,wBAAqB;AAIrB,IAAI,CAAC,IAAI,CAAC,OAAO,CAAC,CAAC;AACnB,MAAM,WAAW,GAAG,eAAkC,CAAC;AAEvD,QAAQ,CAAC,OAAO,EAAE,GAAG,EAAE;IACrB,IAAI,UAAkB,CAAC;IACvB,IAAI,SAAiB,CAAC;IACtB,IAAI,WAA+B,CAAC;IACpC,MAAM,UAAU,GAAuB;QACrC,QAAQ,EAAE;YACR,cAAc,EAAE,EAAE;YAClB,YAAY,EAAE;gBACZ,SAAS,EAAE,MAAM;gBACjB,QAAQ,EAAE,QAAQ;aACnB;SACF;QACD,MAAM,EAAE;YACN,MAAM,EAAE,EAAE;YACV,YAAY,EAAE;gBACZ,SAAS,EAAE,MAAM;gBACjB,QAAQ,EAAE,QAAQ;aACnB;SACF;KACF,CAAC;IACF,SAAS,CAAC,CAAC,IAAI,EAAE,EAAE;QACjB,WAAW,CAAC,MAAM,CAAC,kBAAkB,CAAC,GAAG,EAAE;YACzC,OAAO,WAAW,CAAC;QACrB,CAAC,CAAC,CAAC;QACH,MAAM,CAAC,eAAe,CACpB,KAAK,EACL;YACE,aAAa,EAAE,IAAI;YACnB,iBAAiB,EAAE;gBACjB,IAAI,EAAE,MAAM;gBACZ,MAAM,EAAE,KAAK;aACd;YACD,kBAAkB,EAAE;gBAClB,IAAI,EAAE,OAAO;gBACb,MAAM,EAAE,KAAK;gBACb,MAAM,EAAE,aAAa;gBACrB,UAAU,EAAE,YAAY;aACzB;SACF,EACD,CAAC,GAAG,EAAE,GAAG,EAAE,IAAI,EAAE,EAAE;YACjB,SAAS,GAAG,GAAG,CAAC;YAChB,UAAU,GAAG,IAAI,CAAC;YAClB,WAAW,GAAG;gBACZ,gBAAgB,EAAE,wBAAwB;gBAC1C,GAAG,EAAE,MAAM,CAAC,IAAI,CAAC,SAAS,EAAE,OAAO,CAAC,CAAC,QAAQ,CAAC,QAAQ,CAAC;gBACvD,WAAW,EAAE,sBAAsB;gBACnC,KAAK,EAAE,0BAA0B;gBACjC,GAAG,EAAE,0BAA0B;aAChC,CAAC;YACF,IAAI,CAAC,GAAG,CAAC,CAAC;QACZ,CAAC,CACF,CAAC;IACJ,CAAC,CAAC,CAAC;IACH,EAAE,CAAC,yBAAyB,EAAE,GAAG,EAAE;QACjC,MAAM,CAAC,IAAI,UAAI,CAAC,EAAE,CAAC,CAAC,CAAC,WAAW,EAAE,CAAC;IACrC,CAAC,CAAC,CAAC;IAEH,EAAE,CAAC,sEAAsE,EAAE,KAAK,IAAI,EAAE;QACpF,WAAW,CAAC,GAAG,CAAC,iBAAiB,CAAC,EAAE,MAAM,EAAE,GAAG,EAAE,IAAI,EAAE,WAAW,EAAE,CAAC,CAAC;QAEtE,MAAM,IAAI,GAAG,IAAI,UAAI,CAAC,EAAE,CAAC,CAAC;QAC1B,MAAM,iBAAiB,GAAG,MAAM,IAAI,CAAC,cAAc,CAAC,aAAa,CAAC,CAAC;QACnE,MAAM,CAAC,iBAAiB,CAAC,CAAC,OAAO,CAAC;YAChC,gBAAgB,EAAE,wBAAwB;YAC1C,KAAK,EAAE,0BAA0B;YACjC,GAAG,EAAE,0BAA0B;SAChC,CAAC,CAAC;QACH,MAAM,CAAC,WAAW,CAAC,GAAG,CAAC,CAAC,oBAAoB,CAAC,4BAA4B,CAAC,CAAC;QAE3E,WAAW,CAAC,IAAI,CAAC,iBAAiB,CAAC,EAAE,MAAM,EAAE,GAAG,EAAE,IAAI,EAAE,EAAE,OAAO,EAAE,IAAI,EAAE,EAAE,CAAC,CAAC;QAC7E,MAAM,IAAI,CAAC,kBAAkB,CAAC,aAAa,EAAE,UAAU,EAAE;YACvD,SAAS,EAAE,MAAM;YACjB,QAAQ,EAAE,QAAQ;YAClB,SAAS,EAAE,0BAA0B;SACtC,CAAC,CAAC;QACH,MAAM,CAAC,WAAW,CAAC,IAAI,CAAC,CAAC,oBAAoB,CAAC,+CAA+C,EAAE;YAC7F,SAAS,EAAE,CAAC,MAAM,CAAC,GAAG,CAAC,MAAM,CAAC,EAAE,MAAM,CAAC,GAAG,CAAC,MAAM,CAAC,CAAC;YACnD,MAAM,EAAE,MAAM,CAAC,GAAG,CAAC,MAAM,CAAC;YAC1B,WAAW,EAAE,sBAAsB;YACnC,aAAa,EAAE,MAAM,CAAC,GAAG,CAAC,MAAM,CAAC;YACjC,KAAK,EAAE,MAAM,CAAC,GAAG,CAAC,MAAM,CAAC;SAC1B,CAAC,CAAC;QACH,MAAM,aAAa,GAAG,WAAW,CAAC,IAAI,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;QAExD,MAAM,CAAC,aAAa,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC,CAAC,OAAO,CAAC,MAAM,CAAC,UAAU,CAAC,KAAK,CAAC,CAAC,MAAM,CAAC,WAAW,CAAC,CAAC,MAAM,CAAC,QAAQ,CAAC,CAAC,CAAC;QAC1G,MAAM,CAAC,aAAa,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC,CAAC,OAAO,CAAC,MAAM,CAAC,UAAU,CAAC,KAAK,CAAC,CAAC,MAAM,CAAC,UAAU,CAAC,CAAC,MAAM,CAAC,QAAQ,CAAC,CAAC,CAAC;QAEzG,MAAM,YAAY,GAAG,MAAM,CAAC,cAAc,CACxC,EAAE,GAAG,EAAE,UAAU,EAAE,UAAU,EAAE,YAAY,EAAE,EAC7C,MAAM,CAAC,IAAI,CAAC,aAAa,CAAC,MAAM,EAAE,QAAQ,CAAC,CAC5C,CAAC;QACF,MAAM,QAAQ,GAAG,MAAM,CAAC,gBAAgB,CAAC,aAAa,EAAE,YAAY,EAAE,MAAM,CAAC,IAAI,CAAC,aAAa,CAAC,KAAK,EAAE,QAAQ,CAAC,CAAC,CAAC;QAClH,IAAI,iBAAiB,GAAG,QAAQ,CAAC,MAAM,CAAC,aAAa,CAAC,aAAa,EAAE,QAAQ,EAAE,MAAM,CAAC,CAAC;QACvF,iBAAiB,IAAI,QAAQ,CAAC,KAAK,EAAE,CAAC;QACtC,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,iBAAiB,CAAC,CAAC,CAAC,OAAO,CAAC,UAAU,CAAC,CAAC;IAC5D,CAAC,CAAC,CAAC;AACL,CAAC,CAAC,CAAC"}
\ No newline at end of file
diff --git a/dist/lib/Iris.js b/dist/lib/Iris.js
index ab2a0ac..465b8a2 100644
--- a/dist/lib/Iris.js
+++ b/dist/lib/Iris.js
@@ -22,7 +22,7 @@ class Iris {
         }
         const dataRequest = response.data;
         this.codeKeyMap.set(code, {
-            keyOfHealthDepartment: dataRequest.keyOfHealthDepartment,
+            key: dataRequest.key,
             keyReferenz: dataRequest.keyReferenz,
         });
         return {
@@ -37,15 +37,15 @@ class Iris {
             throw new Error("Code could not be found in key map. Did you perform 'getDataRequest' before?");
         }
         const keys = this.codeKeyMap.get(code);
-        const { dataToTransport, keyToTransport, nonce } = crypto_1.encryptData(keys.keyOfHealthDepartment, data);
+        const { dataToTransport, keyToTransport, nonce } = crypto_1.encryptData(keys.key, data);
         const response = await this.axiosInstance.post(`/data-submissions/${code}/contacts_events`, {
-            checkCode: [util_1.getNameCheckHash(user.firstName, user.lastName), util_1.getBirthDateCheckHash(user.birthDate)].filter(c => !!c),
+            checkCode: [util_1.getNameCheckHash(user.firstName, user.lastName), util_1.getBirthDateCheckHash(user.birthDate)].filter((c) => !!c),
             secret: keyToTransport,
             keyReferenz: keys.keyReferenz,
             encryptedData: dataToTransport,
-            nonce
+            nonce,
         });
-        if (response.status !== 200) {
+        if (response.status !== 201) {
             console.error('IRIS Gateway responded the following data', response.data);
             throw new Error(`Request failed with status Code ${response.status}`);
         }
diff --git a/dist/lib/Iris.js.map b/dist/lib/Iris.js.map
index d81208e..a3f1a8a 100644
--- a/dist/lib/Iris.js.map
+++ b/dist/lib/Iris.js.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"Iris.js","sourceRoot":"","sources":["../../src/lib/Iris.ts"],"names":[],"mappings":";;AAAA,iCAA6C;AAE7C,qCAAuC;AACvC,iCAAiE;AAWjE,MAAM,cAAc,GAAgB;IAClC,OAAO,EAAE,EAAE;CACZ,CAAC;AAEF,MAAqB,IAAI;IAIvB,YAAY,OAA6B;QACvC,IAAI,CAAC,UAAU,GAAG,IAAI,GAAG,EAAE,CAAC;QAC5B,MAAM,IAAI,GAAgB,MAAM,CAAC,MAAM,CAAC,cAAc,EAAE,OAAO,CAAC,CAAC;QACjE,IAAI,CAAC,aAAa,GAAG,eAAK,CAAC,MAAM,CAAC;YAChC,OAAO,EAAE,IAAI,CAAC,OAAO;SACtB,CAAC,CAAC;IACL,CAAC;IAED,KAAK,CAAC,cAAc,CAAC,IAAc;QACjC,MAAM,QAAQ,GAAG,MAAM,IAAI,CAAC,aAAa,CAAC,GAAG,CAAC,kBAAkB,IAAI,EAAE,CAAC,CAAC;QACxE,IAAI,QAAQ,CAAC,MAAM,KAAK,GAAG,EAAE;YAC3B,OAAO,CAAC,KAAK,CAAC,2CAA2C,EAAE,QAAQ,CAAC,IAAI,CAAC,CAAC;YAC1E,MAAM,IAAI,KAAK,CAAC,mCAAmC,QAAQ,CAAC,MAAM,EAAE,CAAC,CAAC;SACvE;QACD,MAAM,WAAW,GAAG,QAAQ,CAAC,IAA0B,CAAC;QACxD,IAAI,CAAC,UAAU,CAAC,GAAG,CAAC,IAAI,EAAE;YACxB,GAAG,EAAE,WAAW,CAAC,GAAG;YACpB,WAAW,EAAE,WAAW,CAAC,WAAW;SACrC,CAAC,CAAC;QACH,OAAO;YACL,gBAAgB,EAAE,WAAW,CAAC,gBAAgB;YAC9C,KAAK,EAAE,WAAW,CAAC,KAAK;YACxB,GAAG,EAAE,WAAW,CAAC,GAAG;YACpB,cAAc,EAAE,WAAW,CAAC,cAAc;SAC3C,CAAC;IACJ,CAAC;IAED,KAAK,CAAC,kBAAkB,CAAC,IAAc,EAAE,IAAwB,EAAE,IAAkB;QACnF,IAAI,CAAC,IAAI,CAAC,UAAU,CAAC,GAAG,CAAC,IAAI,CAAC,EAAE;YAC9B,MAAM,IAAI,KAAK,CAAC,8EAA8E,CAAC,CAAC;SACjG;QACD,MAAM,IAAI,GAAG,IAAI,CAAC,UAAU,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC;QACvC,MAAM,EAAE,eAAe,EAAE,cAAc,EAAE,KAAK,EAAE,GAAG,oBAAW,CAAC,IAAI,CAAC,GAAG,EAAE,IAAI,CAAC,CAAC;QAC/E,MAAM,QAAQ,GAAG,MAAM,IAAI,CAAC,aAAa,CAAC,IAAI,CAAC,qBAAqB,IAAI,kBAAkB,EAAE;YAC1F,SAAS,EAAE,CAAC,uBAAgB,CAAC,IAAI,CAAC,SAAS,EAAE,IAAI,CAAC,QAAQ,CAAC,EAAE,4BAAqB,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,MAAM,CACxG,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC,CACX;YACD,MAAM,EAAE,cAAc;YACtB,WAAW,EAAE,IAAI,CAAC,WAAW;YAC7B,aAAa,EAAE,eAAe;YAC9B,KAAK;SAC6B,CAAC,CAAC;QACtC,IAAI,QAAQ,CAAC,MAAM,KAAK,GAAG,EAAE;YAC3B,OAAO,CAAC,KAAK,CAAC,2CAA2C,EAAE,QAAQ,CAAC,IAAI,CAAC,CAAC;YAC1E,MAAM,IAAI,KAAK,CAAC,mCAAmC,QAAQ,CAAC,MAAM,EAAE,CAAC,CAAC;SACvE;IACH,CAAC;CACF;AAnDD,uBAmDC"}
\ No newline at end of file
diff --git a/dist/lib/crypto.js b/dist/lib/crypto.js
index e00eb22..6e09326 100644
--- a/dist/lib/crypto.js
+++ b/dist/lib/crypto.js
@@ -8,7 +8,7 @@ function encryptData(keyOfHealthDepartment, data) {
     const cipher = crypto.createCipheriv('AES-256-CBC', key, nonce);
     const dataString = JSON.stringify(data);
     const encryptedData = Buffer.concat([cipher.update(dataString, 'utf8'), cipher.final()]);
-    const encryptedKey = crypto.publicEncrypt({ key: keyOfHealthDepartment }, key);
+    const encryptedKey = crypto.publicEncrypt({ key: Buffer.from(keyOfHealthDepartment, 'base64') }, key);
     return {
         dataToTransport: encryptedData.toString('base64'),
         keyToTransport: encryptedKey.toString('base64'),
diff --git a/dist/lib/crypto.js.map b/dist/lib/crypto.js.map
index 767dc06..9cd1e68 100644
--- a/dist/lib/crypto.js.map
+++ b/dist/lib/crypto.js.map
@@ -1 +1 @@
-{"version":3,"file":"crypto.js","sourceRoot":"","sources":["../../src/lib/crypto.ts"],"names":[],"mappings":";;;AAAA,iCAAiC;AAEjC,SAAgB,WAAW,CACzB,qBAA6B,EAC7B,IAAI;IAEJ,MAAM,KAAK,GAAG,MAAM,CAAC,WAAW,CAAC,EAAE,CAAC,CAAC;IACrC,MAAM,GAAG,GAAG,MAAM,CAAC,WAAW,CAAC,EAAE,CAAC,CAAC;IACnC,MAAM,MAAM,GAAG,MAAM,CAAC,cAAc,CAAC,aAAa,EAAE,GAAG,EAAE,KAAK,CAAC,CAAC;IAChE,MAAM,UAAU,GAAG,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC;IACxC,MAAM,aAAa,GAAG,MAAM,CAAC,MAAM,CAAC,CAAC,MAAM,CAAC,MAAM,CAAC,UAAU,EAAE,MAAM,CAAC,EAAE,MAAM,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;IACzF,MAAM,YAAY,GAAG,MAAM,CAAC,aAAa,CAAC,EAAE,GAAG,EAAE,qBAAqB,EAAE,EAAE,GAAG,CAAC,CAAC;IAC/E,OAAO;QACL,eAAe,EAAE,aAAa,CAAC,QAAQ,CAAC,QAAQ,CAAC;QACjD,cAAc,EAAE,YAAY,CAAC,QAAQ,CAAC,QAAQ,CAAC;QAC/C,KAAK,EAAE,KAAK,CAAC,QAAQ,CAAC,QAAQ,CAAC;KAChC,CAAC;AACJ,CAAC;AAfD,kCAeC"}
\ No newline at end of file
+{"version":3,"file":"crypto.js","sourceRoot":"","sources":["../../src/lib/crypto.ts"],"names":[],"mappings":";;;AAAA,iCAAiC;AAEjC,SAAgB,WAAW,CACzB,qBAA6B,EAC7B,IAAI;IAEJ,MAAM,KAAK,GAAG,MAAM,CAAC,WAAW,CAAC,EAAE,CAAC,CAAC;IACrC,MAAM,GAAG,GAAG,MAAM,CAAC,WAAW,CAAC,EAAE,CAAC,CAAC;IACnC,MAAM,MAAM,GAAG,MAAM,CAAC,cAAc,CAAC,aAAa,EAAE,GAAG,EAAE,KAAK,CAAC,CAAC;IAChE,MAAM,UAAU,GAAG,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC;IACxC,MAAM,aAAa,GAAG,MAAM,CAAC,MAAM,CAAC,CAAC,MAAM,CAAC,MAAM,CAAC,UAAU,EAAE,MAAM,CAAC,EAAE,MAAM,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;IACzF,MAAM,YAAY,GAAG,MAAM,CAAC,aAAa,CAAC,EAAE,GAAG,EAAE,MAAM,CAAC,IAAI,CAAC,qBAAqB,EAAE,QAAQ,CAAC,EAAE,EAAE,GAAG,CAAC,CAAC;IACtG,OAAO;QACL,eAAe,EAAE,aAAa,CAAC,QAAQ,CAAC,QAAQ,CAAC;QACjD,cAAc,EAAE,YAAY,CAAC,QAAQ,CAAC,QAAQ,CAAC;QAC/C,KAAK,EAAE,KAAK,CAAC,QAAQ,CAAC,QAAQ,CAAC;KAChC,CAAC;AACJ,CAAC;AAfD,kCAeC"}
\ No newline at end of file
diff --git a/dist/types/IrisCodeKeyMap.d.ts b/dist/types/IrisCodeKeyMap.d.ts
index 1860130..1e2c8df 100644
--- a/dist/types/IrisCodeKeyMap.d.ts
+++ b/dist/types/IrisCodeKeyMap.d.ts
@@ -1,4 +1,4 @@
 import IrisDataRequestDTO from './dto/IrisDataRequestDTO';
 import IrisCode from './IrisCode';
-declare type IrisCodeKeyMap = Map<IrisCode, Pick<IrisDataRequestDTO, 'keyOfHealthDepartment' | 'keyReferenz'>>;
+declare type IrisCodeKeyMap = Map<IrisCode, Pick<IrisDataRequestDTO, 'key' | 'keyReferenz'>>;
 export default IrisCodeKeyMap;
diff --git a/dist/types/dto/IrisDataRequestDTO.d.ts b/dist/types/dto/IrisDataRequestDTO.d.ts
index 4f0e0ca..e5acd0c 100644
--- a/dist/types/dto/IrisDataRequestDTO.d.ts
+++ b/dist/types/dto/IrisDataRequestDTO.d.ts
@@ -1,6 +1,6 @@
 export default interface IrisDataRequestDTO {
     healthDepartment: string;
-    keyOfHealthDepartment: string;
+    key: string;
     keyReferenz: string;
     start?: string;
     end?: string;
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index ed73029..5f880f7 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [1.1.4](https://github.com/InOG-projects/IRIS-library-js/compare/v1.1.3...v1.1.4) (2021-03-21)
+
+
+### Bug Fixes
+
+* adjust data request format of health office key ([8fcf3eb](https://github.com/InOG-projects/IRIS-library-js/commit/8fcf3ebf3a69d693cea9f76180017e10622a277a))
+
 ## [1.1.3](https://github.com/InOG-projects/IRIS-library-js/compare/v1.1.2...v1.1.3) (2021-03-21)
 
 
diff --git a/package.json b/package.json
index 0efc35f..81954de 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "type": "git",
     "url": "https://github.com/InOG-projects/IRIS-library-js.git"
   },
-  "version": "1.1.3",
+  "version": "1.1.4",
   "dependencies": {
     "axios": "^0.21.1"
   },