Unable to correctly import an OpenAPI 3.0 to API Gateway v2

Question

Trying to import an OpenAPI 3.0 definition generated by FastAPI. The API only gets imported partially, and these warnings are listed in the response:
```json
"Warnings": [
    "Parse issue: attribute components.schemas.Place.items is not of type `object`",
    "Parse issue: attribute components.schemas.Place.items is missing",
    "Unable to put method 'PUT' on resource at path '/place/': Part of the given route key path is empty Ignoring.",
    "Unable to put method 'GET' on resource at path '/schedule/': Part of the given route key path is empty Ignoring.",
    "Unable to put method 'PUT' on resource at path '/schedule/': Part of the given route key path is empty Ignoring.",
    "Unable to put method 'POST' on resource at path '/schedule/': Part of the given route key path is empty Ignoring.",
    "Unable to put method 'POST' on resource at path '/booking/': Part of the given route key path is empty Ignoring."
]
```
The process is importing only 1 method per route. As a workaround I can use the old REST API, but if anyone has any idea on how to fix this for the HTTP that would be helpful. Thanks!

Indranil Banerjee AWS · Answer

Please check if any of the limitations mentioned in this document https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-known-issues.html under the section "API Gateway supports most of the OpenAPI 2.0 specification and the OpenAPI 3.0 specification, with the following exceptions:" apply to you.

Is your imported API working correctly when using REST API as opposed to HTTP API. In that case, using REST API is probably a better option for you. You can use this document https://docs.aws.amazon.com/apigateway/latest/developerguide/http-api-vs-rest.html to see the differences between the two and make an informed decision.

Unable to correctly import an OpenAPI 3.0 to API Gateway v2

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