Reported here: https://github.com/anymaniax/orval/issues/878 If you define Header parameters using `"in" : "header",` it fails with ``` ⚠️ SyntaxError: Swagger schema validation failed. #/paths/~1domino~1dataset~1file~1content~1{snapshotId}/get/parameters/0 must have required property 'schema' #/paths/~1domino~1dataset~1file~1content~1{snapshotId}/get/parameters/0 must NOT be valid #/paths/~1domino~1dataset~1file~1content~1{snapshotId}/get/parameters/0 must match exactly one schema in oneOf #/paths/~1domino~1dataset~1file~1content~1{snapshotId}/get/parameters/0 must have required property '$ref' #/paths/~1domino~1dataset~1file~1content~1{snapshotId}/get/parameters/0 must match exactly one schema in oneOf #/paths/~1domino~1dataset~1file~1content~1{snapshotId}/get/parameters/1 must have required property 'schema' #/paths/~1domino~1dataset~1file~1content~1{snapshotId}/get/parameters/1 must NOT be valid #/paths/~1domino~1dataset~1file~1content~1{snapshotId}/get/parameters/1 must match exactly one schema in oneOf #/paths/~1domino~1dataset~1file~1content~1{snapshotId}/get/parameters/1 must have required property '$ref' #/paths/~1domino~1dataset~1file~1content~1{snapshotId}/get/parameters/1 must match exactly one schema in oneOf ``` ```js "/domino/dataset/file/content/{snapshotId}" : { "get" : { "tags" : [ "Domino" ], "summary" : "Get a single file content", "description" : "Gets the contents of a single file as a string.", "parameters" : [ { "name" : "X-Domino-Api-Key", "in" : "header", "description" : "Domino API Key", "required" : true, "example" : "83b8568486a99e4a61a49583fd8bea78cbe51ccfbabed01fa04bedf9c875ff96", "content" : { "text/plain" : { } } }, { "name" : "X-Domino-Api-Url", "in" : "header", "description" : "Domino URL", "required" : true, "example" : "https://domino.ksmpartners.com/v4", "content" : { "text/plain" : { } } }, { "name" : "snapshotId", "in" : "path", "description" : "Snapshot Identifier", "required" : true, "schema" : { "type" : "string" } }, { "name" : "filePath", "in" : "query", "description" : "File Path", "required" : true, "schema" : { "type" : "string" } } ], "responses" : { "200" : { "description" : "File Content", "content" : { "application/json" : { "schema" : { "type" : "string" } } } }, "403" : { "description" : "Forbidden", "content" : { "application/json" : { "schema" : { "$ref" : "#/components/schemas/ApiError" } } } }, "500" : { "description" : "Unexpected error", "content" : { "application/json" : { "schema" : { "$ref" : "#/components/schemas/ApiError" } } } } } } } ```