diff --git a/reference/sender.json b/reference/sender.json
index f333ab900a3a4d6feeafcca58e0560604c797fc8..8bbdadbe7e0b4142c5269076b20afa5fd5d8fdbf 100644
--- a/reference/sender.json
+++ b/reference/sender.json
@@ -100,18 +100,8 @@
               }
             }
           },
-          "410": {
-            "description": "Gone",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "../models/error-body.json"
-                }
-              }
-            }
-          },
-          "413": {
-            "description": "Request Entity Too Large",
+          "404": {
+            "description": "Not Found",
             "content": {
               "application/json": {
                 "schema": {
@@ -226,15 +216,8 @@
               }
             }
           },
-          "406": {
-            "description": "Not Acceptable",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "../models/error-body.json"
-                }
-              }
-            }
+          "404": {
+            "description": "Not Found"
           },
           "413": {
             "description": "Request Entity Too Large",
@@ -448,16 +431,6 @@
               }
             }
           },
-          "400": {
-            "description": "Bad Request",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "../models/error-body.json"
-                }
-              }
-            }
-          },
           "401": {
             "description": "Unauthorized",
             "content": {
@@ -595,37 +568,7 @@
             }
           },
           "404": {
-            "description": "Not Acceptable",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "../models/error-body.json"
-                }
-              }
-            }
-          },
-          "410": {
-            "description": "Gone",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "../models/error-body.json"
-                }
-              }
-            }
-          },
-          "413": {
-            "description": "Request Entity Too Large",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "../models/error-body.json"
-                }
-              }
-            }
-          },
-          "415": {
-            "description": "Unsupported Media Type",
+            "description": "Not Found",
             "content": {
               "application/json": {
                 "schema": {
@@ -742,8 +685,8 @@
               }
             }
           },
-          "410": {
-            "description": "Gone",
+          "404": {
+            "description": "Not Found",
             "content": {
               "application/json": {
                 "schema": {
@@ -752,8 +695,8 @@
               }
             }
           },
-          "413": {
-            "description": "Request Entity Too Large",
+          "415": {
+            "description": "Unsupported Media Type",
             "content": {
               "application/json": {
                 "schema": {
@@ -886,16 +829,6 @@
               }
             }
           },
-          "400": {
-            "description": "Bad Request",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "../models/error-body.json"
-                }
-              }
-            }
-          },
           "401": {
             "description": "Unauthorized",
             "content": {
@@ -1052,16 +985,6 @@
               }
             }
           },
-          "400": {
-            "description": "Bad Request",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "../models/error-body.json"
-                }
-              }
-            }
-          },
           "401": {
             "description": "Unauthorized",
             "content": {
@@ -1082,8 +1005,8 @@
               }
             }
           },
-          "410": {
-            "description": "Gone",
+          "404": {
+            "description": "Not Found",
             "content": {
               "application/json": {
                 "schema": {
diff --git a/reference/subscriber.json b/reference/subscriber.json
index 50a050a3b49b0f73336b829389a59d012788728a..29a8228ba35e2ee104bf99452729c366274dde2a 100644
--- a/reference/subscriber.json
+++ b/reference/subscriber.json
@@ -192,6 +192,16 @@
                 }
               }
             }
+          },
+          "404": {
+            "description": "Not Found",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "../models/error-body.json"
+                }
+              }
+            }
           }
         },
         "operationId": "list-destinations",
@@ -839,16 +849,6 @@
                 }
               }
             }
-          },
-          "417": {
-            "description": "Expectation Failed",
-            "content": {
-              "application/json": {
-                "schema": {
-                  "$ref": "../models/error-body.json"
-                }
-              }
-            }
           }
         },
         "description": "Bestätigt die Abholung der Application. Über den Parameter `finalDelivery` im Body wird gesteuert, wie der Folgestatus aussieht:\n\n| final-delivery | status      |\n| -------------- | ----------- |\n| `false`        | \"forwarded\" |\n| `true`         | \"delivered\" |\n\nDer Parameter `finalDelivery` zeigt an, ob der Antrag noch weitergesendet wird (`false`) oder das finale Ziel erreicht hat (`true`).\n\nSofern der Wert `false` übergeben wurde, muss zu einem späteren Zeitpunkt, wenn der Antrag final zugestellt wurde, ein weiterer Aufruf mit dem Wert `true` erfolgen.",