diff --git a/docs/openapi.json b/docs/openapi.json
index 7f267b2..9a4876d 100644
--- a/docs/openapi.json
+++ b/docs/openapi.json
@@ -976,24 +976,14 @@
         }
       },
       "Cancellation" : {
-        "required" : [ "contractId", "effectiveDate", "reasonCode" ],
+        "required" : [ "action", "identifier" ],
         "type" : "object",
         "properties" : {
-          "contractId" : {
-            "maxLength" : 20,
-            "minLength" : 0,
-            "type" : "string",
-            "description" : "Id given by SaaS provider. Identifies the contract which should be cancelled"
-          },
-          "effectiveDate" : {
-            "type" : "string",
-            "description" : "effecitve date of cancellation",
-            "format" : "date"
+          "identifier" : {
+            "$ref" : "#/components/schemas/Identifier"
           },
-          "reasonCode" : {
-            "type" : "integer",
-            "description" : "A code uniquely identifying the cancellation reason",
-            "format" : "int32"
+          "action" : {
+            "$ref" : "#/components/schemas/Action"
           }
         }
       }
diff --git a/docs/swagger.json b/docs/swagger.json
index 51a84c8..3d0aed1 100644
--- a/docs/swagger.json
+++ b/docs/swagger.json
@@ -464,27 +464,16 @@
     },
     "Cancellation": {
       "properties": {
-        "contractId": {
-          "description": "Id given by SaaS provider. Identifies the contract which should be cancelled",
-          "maxLength": 20,
-          "minLength": 0,
-          "type": "string"
-        },
-        "effectiveDate": {
-          "description": "effecitve date of cancellation",
-          "format": "date",
-          "type": "string"
+        "action": {
+          "$ref": "#/definitions/Action"
         },
-        "reasonCode": {
-          "description": "A code uniquely identifying the cancellation reason",
-          "format": "int32",
-          "type": "integer"
+        "identifier": {
+          "$ref": "#/definitions/Identifier"
         }
       },
       "required": [
-        "contractId",
-        "effectiveDate",
-        "reasonCode"
+        "action",
+        "identifier"
       ],
       "type": "object"
     },
diff --git a/src/main/java/ch/baloise/corellia/api/entities/Cancellation.java b/src/main/java/ch/baloise/corellia/api/entities/Cancellation.java
index 120c410..5988b48 100644
--- a/src/main/java/ch/baloise/corellia/api/entities/Cancellation.java
+++ b/src/main/java/ch/baloise/corellia/api/entities/Cancellation.java
@@ -1,52 +1,35 @@
 package ch.baloise.corellia.api.entities;
 
-import static ch.baloise.corellia.api.constraints.SizeConstraint.CONTRACT_ID_MAX_SIZE;
-
-import com.fasterxml.jackson.annotation.JsonPropertyDescription;
 import java.io.Serializable;
-import java.time.LocalDate;
+import javax.validation.Valid;
 import javax.validation.constraints.NotNull;
-import javax.validation.constraints.Size;
 
 public class Cancellation implements Serializable {
 
-  private static final long serialVersionUID = 10;
-
-  @NotNull
-  @Size(max = CONTRACT_ID_MAX_SIZE)
-  @JsonPropertyDescription(
-      "Id given by SaaS provider. Identifies the contract which should be cancelled")
-  private String contractId;
-
-  @NotNull
-  @JsonPropertyDescription("effecitve date of cancellation")
-  private LocalDate effectiveDate;
+    private static final long serialVersionUID = 10;
 
-  @NotNull
-  @JsonPropertyDescription("A code uniquely identifying the cancellation reason")
-  private Integer reasonCode;
+    @NotNull
+    @Valid
+    private Identifier identifier;
 
-  public String getContractId() {
-    return contractId;
-  }
+    @NotNull
+    @Valid
+    private Action action;
 
-  public void setContractId(String contractId) {
-    this.contractId = contractId;
-  }
+    public Identifier getIdentifier() {
+        return identifier;
+    }
 
-  public LocalDate getEffectiveDate() {
-    return effectiveDate;
-  }
+    public void setIdentifier(Identifier identifier) {
+        this.identifier = identifier;
+    }
 
-  public void setEffectiveDate(LocalDate effectiveDate) {
-    this.effectiveDate = effectiveDate;
-  }
+    public Action getAction() {
+        return action;
+    }
 
-  public Integer getReasonCode() {
-    return reasonCode;
-  }
+    public void setAction(Action action) {
+        this.action = action;
+    }
 
-  public void setReasonCode(Integer reasonCode) {
-    this.reasonCode = reasonCode;
-  }
 }