diff --git a/definitions/3.0.0/multiFormatAsyncAPISchemaMessage.json b/definitions/3.0.0/multiFormatAsyncAPISchemaMessage.json
new file mode 100644
index 00000000..56f137cb
--- /dev/null
+++ b/definitions/3.0.0/multiFormatAsyncAPISchemaMessage.json
@@ -0,0 +1,48 @@
+{
+
+  "if": {
+    "description": "If schemaFormat has been defined check if it's one of the AsyncAPI Schema Object formats",
+    "required": [
+      "schemaFormat"
+    ],
+    "properties": {
+      "schemaFormat": {
+        "enum": [
+          "application/vnd.aai.asyncapi;version=2.0.0",
+          "application/vnd.aai.asyncapi+json;version=2.0.0",
+          "application/vnd.aai.asyncapi+yaml;version=2.0.0",
+          "application/vnd.aai.asyncapi;version=2.1.0",
+          "application/vnd.aai.asyncapi+json;version=2.1.0",
+          "application/vnd.aai.asyncapi+yaml;version=2.1.0",
+          "application/vnd.aai.asyncapi;version=2.2.0",
+          "application/vnd.aai.asyncapi+json;version=2.2.0",
+          "application/vnd.aai.asyncapi+yaml;version=2.2.0",
+          "application/vnd.aai.asyncapi;version=2.3.0",
+          "application/vnd.aai.asyncapi+json;version=2.3.0",
+          "application/vnd.aai.asyncapi+yaml;version=2.3.0",
+          "application/vnd.aai.asyncapi;version=2.4.0",
+          "application/vnd.aai.asyncapi+json;version=2.4.0",
+          "application/vnd.aai.asyncapi+yaml;version=2.4.0",
+          "application/vnd.aai.asyncapi;version=2.5.0",
+          "application/vnd.aai.asyncapi+json;version=2.5.0",
+          "application/vnd.aai.asyncapi+yaml;version=2.5.0",
+          "application/vnd.aai.asyncapi;version=2.6.0",
+          "application/vnd.aai.asyncapi+json;version=2.6.0",
+          "application/vnd.aai.asyncapi+yaml;version=2.6.0",
+          "application/vnd.aai.asyncapi;version=3.0.0",
+          "application/vnd.aai.asyncapi+json;version=3.0.0",
+          "application/vnd.aai.asyncapi+yaml;version=3.0.0"
+        ]
+      }
+    }
+  },
+  "then": {
+    "properties": {
+      "schema": {
+        "$ref": "http://asyncapi.com/definitions/3.0.0/schema.json"
+      }
+    }
+  },
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "http://asyncapi.com/definitions/3.0.0/multiFormatAsyncAPISchemaMessage.json"
+}
\ No newline at end of file
diff --git a/definitions/3.0.0/multiFormatAvroMessage.json b/definitions/3.0.0/multiFormatAvroMessage.json
new file mode 100644
index 00000000..abc613ea
--- /dev/null
+++ b/definitions/3.0.0/multiFormatAvroMessage.json
@@ -0,0 +1,32 @@
+{
+  "if": {
+    "required": [
+      "schemaFormat"
+    ],
+    "properties": {
+      "schemaFormat": {
+        "enum": [
+          "application/vnd.apache.avro;version=1.9.0",
+          "application/vnd.apache.avro+json;version=1.9.0",
+          "application/vnd.apache.avro+yaml;version=1.9.0"
+        ]
+      }
+    }
+  },
+  "then": {
+    "properties": {
+      "schema": {
+        "oneOf": [
+          {
+            "$ref": "http://asyncapi.com/definitions/3.0.0/Reference.json"
+          },
+          {
+            "$ref": "http://asyncapi.com/definitions/3.0.0/avroSchema_v1.json"
+          }
+        ]
+      }
+    }
+  },
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "http://asyncapi.com/definitions/3.0.0/multiFormatAvroMessage.json"
+}
\ No newline at end of file
diff --git a/definitions/3.0.0/multiFormatJsonSchemaMessage.json b/definitions/3.0.0/multiFormatJsonSchemaMessage.json
new file mode 100644
index 00000000..d5bb45ca
--- /dev/null
+++ b/definitions/3.0.0/multiFormatJsonSchemaMessage.json
@@ -0,0 +1,24 @@
+{
+  "if": {
+    "required": [
+      "schemaFormat"
+    ],
+    "properties": {
+      "schemaFormat": {
+        "enum": [
+          "application/schema+json;version=draft-07",
+          "application/schema+yaml;version=draft-07"
+        ]
+      }
+    }
+  },
+  "then": {
+    "properties": {
+      "schema": {
+        "$ref": "http://json-schema.org/draft-07/schema"
+      }
+    }
+  },
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "http://asyncapi.com/definitions/3.0.0/multiFormatJsonSchemaMessage.json"
+}
\ No newline at end of file
diff --git a/definitions/3.0.0/multiFormatOpenAPIMessage.json b/definitions/3.0.0/multiFormatOpenAPIMessage.json
new file mode 100644
index 00000000..ba7800df
--- /dev/null
+++ b/definitions/3.0.0/multiFormatOpenAPIMessage.json
@@ -0,0 +1,32 @@
+{
+  "if": {
+    "required": [
+      "schemaFormat"
+    ],
+    "properties": {
+      "schemaFormat": {
+        "enum": [
+          "application/vnd.oai.openapi;version=3.0.0",
+          "application/vnd.oai.openapi+json;version=3.0.0",
+          "application/vnd.oai.openapi+yaml;version=3.0.0"
+        ]
+      }
+    }
+  },
+  "then": {
+    "properties": {
+      "schema": {
+        "oneOf": [
+          {
+            "$ref": "http://asyncapi.com/definitions/3.0.0/Reference.json"
+          },
+          {
+            "$ref": "http://asyncapi.com/definitions/3.0.0/openapiSchema_3_0.json"
+          }
+        ]
+      }
+    }
+  },
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "http://asyncapi.com/definitions/3.0.0/multiFormatOpenAPIMessage.json"
+}
\ No newline at end of file