From 12b3a1ed7ff2f90ef1f1cb78b49c48b4bfccf4b1 Mon Sep 17 00:00:00 2001
From: Yaacov Rydzinski <yaacovCR@gmail.com>
Date: Fri, 20 May 2022 09:21:24 +0300
Subject: [PATCH 1/2] Add spec text for KnownOperationType

see: https://github.com/graphql/graphql-js/issues/3592
---
 spec/Section 5 -- Validation.md | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/spec/Section 5 -- Validation.md b/spec/Section 5 -- Validation.md
index 4eda8e7b4..27f8b96ad 100644
--- a/spec/Section 5 -- Validation.md	
+++ b/spec/Section 5 -- Validation.md	
@@ -129,6 +129,39 @@ extend type Dog {
 
 ## Operations
 
+### Operation Types
+
+**Formal Specification**
+
+- For each {operation} in the document.
+- Let {operationType} be the type of {operation}
+- Let {operationRootType} be the root type in {schema} for {operationType}.
+- {operationRootType} must exist.
+
+**Explanatory Text**
+
+The root type for a given operation must be defined within the schema.
+
+For example the following document is valid:
+
+```graphql example
+query getDogName {
+  dog {
+    name
+  }
+}
+```
+
+While the following document is invalid:
+
+```graphql counter-example
+mutation getDogName {
+  dog {
+    name
+  }
+}
+```
+
 ### Named Operation Definitions
 
 #### Operation Name Uniqueness

From f08bcf412172901caeba12cf5e386a2d6022a433 Mon Sep 17 00:00:00 2001
From: Yaacov Rydzinski <yaacovCR@gmail.com>
Date: Fri, 20 May 2022 09:34:28 +0300
Subject: [PATCH 2/2] narrow section heading

---
 spec/Section 5 -- Validation.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spec/Section 5 -- Validation.md b/spec/Section 5 -- Validation.md
index 27f8b96ad..f18ee7e98 100644
--- a/spec/Section 5 -- Validation.md	
+++ b/spec/Section 5 -- Validation.md	
@@ -129,7 +129,7 @@ extend type Dog {
 
 ## Operations
 
-### Operation Types
+### Operation Type Existence
 
 **Formal Specification**