To fix the 400 Bad Request error in your Google API request, you need to ensure that the OBJECT type properties in your response_schema are properly defined. Here are the key steps to resolve the issue:

• Define the necessary properties for the OBJECT type fields.

• Ensure that the properties field for any OBJECT type is not empty.

• Verify that all required parameters and fields are included in the schema.

Key Actions:

• Add specific properties to the logic field within the questions items.

• Check for any other empty OBJECT type fields and define their properties accordingly.

• Review the entire schema to ensure all required fields are populated.