See this basic example [request](https://github.com/user-attachments/files/22841394/request.sh) to `/api/v2/search/spending_by_award/`. In the [response-payload](https://github.com/user-attachments/files/22841536/response-payload.json) the following fields are null yet the [contract](https://github.com/fedspendingtransparency/usaspending-api/blob/master/usaspending_api/api_contracts/contracts/v2/search/spending_by_award.md#spendingbyawardresponse-object) does not specify null is allowed. - Place of Performance City Code - def_codes - COVID-19 Obligations - COVID-19 Outlays - Infrastructure Outlays - Infrastructure Obligations Happy to fix this if the solution is to allow null values for these fields.