diff --git a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/costmanagement.json b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/costmanagement.json
index 23e92ac1d302..ec51be681b17 100644
--- a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/costmanagement.json
+++ b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/costmanagement.json
@@ -648,6 +648,9 @@
               "$ref": "#/definitions/QueryResult"
             }
           },
+          "204": {
+            "description": "An empty response is sent when there is no information available within the selected scope."
+          },
           "default": {
             "description": "Error response describing why the operation failed.",
             "schema": {
diff --git a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/BillingAccountForecast.json b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/BillingAccountForecast.json
index d7201ac194c0..022163bec7bb 100644
--- a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/BillingAccountForecast.json
+++ b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/BillingAccountForecast.json
@@ -115,6 +115,7 @@
           ]
         }
       }
-    }
+    },
+    "204": {}
   }
 }
diff --git a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/BillingProfileForecast.json b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/BillingProfileForecast.json
index a6e4a6c01994..24728f399d3d 100644
--- a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/BillingProfileForecast.json
+++ b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/BillingProfileForecast.json
@@ -116,6 +116,7 @@
           ]
         }
       }
-    }
+    },
+    "204": {}
   }
 }
diff --git a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/DepartmentForecast.json b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/DepartmentForecast.json
index 09fdf27adcb7..c9506bdbb1f8 100644
--- a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/DepartmentForecast.json
+++ b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/DepartmentForecast.json
@@ -116,6 +116,7 @@
           ]
         }
       }
-    }
+    },
+    "204": {}
   }
 }
diff --git a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/EnrollmentAccountForecast.json b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/EnrollmentAccountForecast.json
index 77fe1a199954..8d738cc9d3f8 100644
--- a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/EnrollmentAccountForecast.json
+++ b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/EnrollmentAccountForecast.json
@@ -116,6 +116,7 @@
           ]
         }
       }
-    }
+    },
+    "204": {}
   }
 }
diff --git a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/InvoiceSectionForecast.json b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/InvoiceSectionForecast.json
index 4744d27980ea..cf90f1d82106 100644
--- a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/InvoiceSectionForecast.json
+++ b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/InvoiceSectionForecast.json
@@ -117,6 +117,7 @@
           ]
         }
       }
-    }
+    },
+    "204": {}
   }
 }
diff --git a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/ResourceGroupForecast.json b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/ResourceGroupForecast.json
index 4cfe943fc029..223d9e782c04 100644
--- a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/ResourceGroupForecast.json
+++ b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/ResourceGroupForecast.json
@@ -95,6 +95,7 @@
           ]
         }
       }
-    }
+    },
+    "204": {}
   }
 }
diff --git a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/SubscriptionForecast.json b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/SubscriptionForecast.json
index 78e102ac4f18..31577642c5d9 100644
--- a/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/SubscriptionForecast.json
+++ b/specification/cost-management/resource-manager/Microsoft.CostManagement/stable/2019-11-01/examples/SubscriptionForecast.json
@@ -115,6 +115,7 @@
           ]
         }
       }
-    }
+    },
+    "204": {}
   }
 }