Campaign goal type must be specified when requesting guidance for a new campaign to be selectively guided according to the goal (e.g. CPC or ROAS).
- FIXED_CPC: Goal type for the campaigns should be set to OptimizeFixedCpc message as setting value.
- OPTIMIZE_ROAS: Goal type for the campaigns should be set to OptimizeRoas message as setting value.
- FIXED_COMMISSION_RATE: Goal type for the campaigns should be set to OptimizeFixedCommissionRate message as setting value.
- FIXED_CPM: Goal type for the campaigns should be set to OptimizeFixedCpm message as setting value.
- MAXIMIZE_SALES: Goal type for the campaigns should have MaximizeSales message as setting value.