> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Combine Design Responses

Combines a list of design responses into a single response. The responses are combined according to the operation provided by the Aggregation input. The aggregate can be used in an optimization objective or design response constraint.

### Inputs

| Name        | Type                                                                          | Description                                                                                 |
| ----------- | ----------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------- |
| Responses   | [Design Response List](../../../../block-documentation/types/design-response) | List of design responses to be combined. All elements of the list must have the same units. |
| Aggregation | Aggregate Enum                                                                | The method of aggregation.                                                                  |

### Outputs

| Type                                                                     |
| ------------------------------------------------------------------------ |
| [Design Response](../../../../block-documentation/types/design-response) |