Fields missing from API response -- any suggestions?

Hi all,

We're using the Grantmaking SKY API (POST /grantmaking/api/v1/requests/ids) with the Blackbaud SKY Add-ins Power Connector in Power Automate to sync request data to SharePoint.

We can successfully retrieve standard API response fields (project_title, request_amount, etc.) and custom fields via the custom_fields parameter. However, we need to pull three fields that exist on our request records but aren't part of the standard API response:

• Project Description (bbgm__Request__PROJECT_DESCRIPTION)
• Project Budget (bbgm__Request__PROJECT_BUDGET)
• Organization Total Budget (bbgm__Organization__ORGANIZATION_TOTAL_BUDGET)

These are populated by applicants through our application forms and are visible on the request record in Blackbaud, but they don't appear in the API response.

We tried creating custom fields and mapping the standard form fields to them via the API property name in the form field configuration, but the custom fields come back empty from the API — the data stays in the standard fields only. Natively custom fields (like Objectives_and_Outcomes) do return correctly.

Has anyone found a way to access standard fields like Project Description or Project Budget through the SKY API? Or is there a configuration step we're missing to make the form-to-custom-field mapping work?

Appreciate any insights. Thanks!