botorch/acquisition/knowledge_gradient.py [145:155]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        if objective is None and model.num_outputs != 1:
            if posterior_transform is None:
                raise UnsupportedError(
                    "Must specify an objective or a posterior transform when using "
                    "a multi-output model."
                )
            elif not posterior_transform.scalarize:
                raise UnsupportedError(
                    "If using a multi-output model without an objective, "
                    "posterior_transform must scalarize the output."
                )
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botorch/acquisition/monte_carlo.py [77:87]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        if objective is None and model.num_outputs != 1:
            if posterior_transform is None:
                raise UnsupportedError(
                    "Must specify an objective or a posterior transform when using "
                    "a multi-output model."
                )
            elif not posterior_transform.scalarize:
                raise UnsupportedError(
                    "If using a multi-output model without an objective, "
                    "posterior_transform must scalarize the output."
                )
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -