@odata.type is marked required in the OpenAPI schemas but is omitted from most GET responses

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
55/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Quiet
Tech stack
openapi

Research direction

Inspect the Graph v1.0 OpenAPI description and the entity schemas used by GET /teams/{team-id}; compare their required arrays with the documented response behavior. Done means @odata.type is not required for ordinary responses while remaining accurate for polymorphic instances.

Written by the indexing model from the issue text.

Description

ToTriage

Graph v1.0 OpenAPI description, @odata.type is included in the required array of many entity schemas. However, Graph does not return @odata.type in most GET responses, it's emitted only for polymorphic instances where the concrete type differs from the declared type. This makes the spec internally inconsistent and response that conforms to the API contradicts its own schema's required constraint.

Reproduction
GET /teams/{team-id} the returned team object has no @odata.type, yet the schema marks it required.

Dominant language
XSLT
Stars
166
Forks
55
Avg merge
16h 12m
Merged PRs (30d)
14

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