Extend the Ed-Fi ODS/API with a state-specific extension to capture custom enrollment status codes

Steps

1. Review the SEA's published extension schema (usually an XSD or JSON Schema file) to identify the new element names, types, and associations with core Ed-Fi entities such as StudentSchoolAssociation.
2. In your local MetaEd project, create a new Domain Entity Extension that references the core entity and adds the custom element; run the MetaEd build to generate the extension SQL and API surface scripts.
3. Apply the generated scripts to your ODS database and redeploy the Ed-Fi ODS/API so the extended endpoints (e.g., /ed-fi/studentSchoolAssociations with an _ext block) are live.
4. Submit extension data by nesting values inside the _ext object in POST/PUT request bodies, keyed by the extension namespace assigned by the SEA.
5. Validate using Swagger UI at /metadata/data/v3/swagger.json to confirm the extended schema is visible, and run a test POST to verify the extension fields are stored.
6. Document the extension namespace and version so downstream consumers (dashboards, state extract jobs) can reference the correct _ext path.