AI-generated Key Takeaways
- 
          The content describes different payment modes for advertising campaigns. 
- 
          UNSPECIFIEDandUNKNOWNare general or return-only values for payment modes.
- 
          CLICKSmeans paying per interaction, whileCONVERSIONSandCONVERSION_VALUEinvolve paying per conversion or conversion value, respectively, with specific eligibility requirements.
- 
          GUEST_STAYis another payment mode based on guest stay value, specifically for Hotel campaigns.
Enum describing possible payment modes.
| Enums | |
|---|---|
| 
 | Not specified. | 
| 
 | Used for return value only. Represents value unknown in this version. | 
| 
 | Pay per interaction. | 
| 
 | Pay per conversion value. This mode is only supported by campaigns with AdvertisingChannelType.HOTEL, BiddingStrategyType.COMMISSION, and BudgetType.STANDARD. | 
| 
 | Pay per conversion. This mode is only supported by campaigns with AdvertisingChannelType.DISPLAY (excluding AdvertisingChannelSubType.DISPLAY_GMAIL), BiddingStrategyType.TARGET_CPA, and BudgetType.FIXED_CPA. The customer must also be eligible for this mode. See Customer.eligibility_failure_reasons for details. | 
| 
 | Pay per guest stay value. This mode is only supported by campaigns with AdvertisingChannelType.HOTEL, BiddingStrategyType.COMMISSION, and BudgetType.STANDARD. |