Mutation through API fails, but works from web portal

Question

Hey! I'm trying to get some help figuring out why a mutation works in the AWS AppSync web portal, but fails when I try to use the API within one of my lambda tests.  
  
Schema:

```
type OrganizationLink @model @searchable @auth(rules: [
    {allow: groups, groups: ["Admin"]},
    {allow: groups, groupsField: "readGroups", queries: [get, list], mutations: null},
    {allow: groups, groupsField: "writeGroups" mutations: [update, delete], queries: null}
]) {
    id: ID!
    type: OrganizationType
    school: School @connection(name: "SchoolOrganization")
    district: District @connection(name: "DistrictOrganization")
    organization: Organization @connection(name: "OrganizationConnection")
    readGroups: [String]
    writeGroups: [String]
}
```

Auto-Generated Schema from backend/.../schema.graphql:

```
...
createOrganizationLink(input: CreateOrganizationLinkInput!): OrganizationLink

...
onCreateOrganizationLink: OrganizationLink @aws_subscribe(mutations: ["createOrganizationLink"])

...
input CreateOrganizationLinkInput {
  id: ID
  type: OrganizationType
  readGroups: [String]
  writeGroups: [String]
  organizationLinkSchoolId: ID
  organizationLinkDistrictId: ID
  organizationLinkOrganizationId: ID
}
```

Mutation:

```
mutation createLink($organizationID: ID, $schoolID: ID){
	  createOrganizationLink(input:{
	  	type: School
		organizationLinkOrganizationId: $organizationID
		organizationLinkSchoolId: $schoolID
	  })  {    id  }
}
```

API Call method:

```
const resp = await fetch(graphqlApi, {
		body,
		credentials: 'include',
		headers: {
			accept: '*/*',
			authorization: AccessToken,
			'content-type': 'application/json',
		},
		method: 'POST',
		mode: 'cors',
	});
```

API Request Body:

```
{
    "operationName": "createOrganizationLink",
    "query": "
		mutation createLink($organizationID: ID, $schoolID: ID){
		  createOrganizationLink(input:{
		  	type: School
			organizationLinkOrganizationId: $organizationID
			organizationLinkSchoolId: $schoolID
		  })  {    id  }
	}",
    "variables": {
        "organizationId": "5432eca5-1018-4bf1-ba60-679557ca1e3c",
        "schoolId": "ed1fbead-1906-4cc8-b5b3-64b3e9995501"
    }
}
```

Response Error:

```
url: 'https://XXXXXXXXXX.appsync-api.us-west-2.amazonaws.com/graphql',
     status: 400,
     statusText: 'Bad Request',

errorType: 'BadRequestException',
message: 'No operation matches the provided operation name createOrganizationLink.' } ] }
```

I don't understand how the operation isn't being found, when I am using the exact same operation in the web portal. The operation to create an organization link is clearly in the schema as well. I use this same function to do other mutations prior to this one and they work flawlessly. Any hints would be greatly appreciated...please let me know if any additional information is needed.  
  
Edited by: markta on Apr 19, 2019 2:03 PM

Answer

Apparently the 'operationName' is looking for what I consider the "nickname" of a mutation, not the actual "name".  
  
mutation createAndStuff{  
   createOrganizationLink { ... } { ... }   
}

Operation name is looking for "createAndStuff" not "createOrganizationLink"

Answer

I just ran across this problem too. For me, at least, it is actually a bug with the Insomnia app that appears to be a recurring problem.  See this github issue for more info https://github.com/Kong/insomnia/issues/5698

The problem seems to occur when you add or change the operation name after you have already made a request. For example, if you query with this: 
```
query MyQuery{ aSchemaDefinedQuery(param: "something") { aValue } }
```
it will work repeatedly as many times as you want. However, if you change or remove "MyQuery" is will start failing with an error like
```
{
  "errors": [
    {
      "errorType": "BadRequestException",
      "message": "No operation matches the provided operation name MyQ."
    }
  ] 
}
```
If you reselect the operation in Insomnia (at the top left of the GraphQL tab) it will start working again.

Mutation through API fails, but works from web portal

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