AI-generated Key Takeaways
- 
          NetworkError.Reason lists possible reasons for a NetworkError. 
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          These reasons include issues with currency, multi-currency support, data transfer configuration, and various scenarios related to MCM (Multiple Customer Management) delegation. 
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          Some NetworkError reasons specifically relate to exceeding limits on child networks or issues with the parent-child relationships in MCM. 
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          The UNKNOWNreason is returned if the actual value is not exposed by the requested API version.
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          Certain MCM-related errors are specific to Ad Manager 360 networks. 
Possible reasons for NetworkError
- Namespace
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               https://www.google.com/apis/ads/publisher/v202508
| Enumeration | Description | 
|---|---|
| UNKNOWN | The value returned if the actual value is not exposed by the requested API version. | 
| MULTI_CURRENCY_NOT_SUPPORTED | Multi-currency support is not enabled for this network. This is an Ad Manager 360 feature. | 
| UNSUPPORTED_CURRENCY | Currency provided is not supported. | 
| NETWORK_CURRENCY_CANNOT_BE_SAME_AS_SECONDARY | The network currency cannot also be specified as a secondary currency. | 
| DEPRECATED_DATA_TRANSFER_CONFIG_EVENT_TYPE | The data transfer config cannot have a deprecated event type. | 
| DELEGATION_CHILD_NETWORK_CANNOT_BECOME_A_PARENT | An MCM child network cannot become a parent network. | 
| DELEGATION_PARENT_NETWORK_CANNOT_BECOME_A_CHILD | An MCM parent network cannot become a child of another network. | 
| CANNOT_ADD_SAME_NETWORK_AS_DELEGATION_CHILD | In MCM, a network cannot become a parent of itself. | 
| MAX_APPROVED_DELEGATION_CHILD_NETWORKS_EXCEEDED | The MCM parent network has exceeded the system limit of child networks. | 
| MAX_PENDING_DELEGATION_CHILD_NETWORKS_EXCEEDED | The MCM parent network has exceeded the system limit of child networks pending approval. | 
| CHILD_NETWORK_ALREADY_EXISTS | The network is already being managed by the parent network for MCM. | 
| CHILD_NETWORK_CANNOT_BE_DISAPPROVED | A child network must not be disapproved. | 
| IN_PARENT_DELEGATION_UNSUPPORTED_FOR_NETWORK | Only Ad Manager 360 networks are allowed to manage the inventory of other networks. | 
| ERROR_REENABLING_AD_EXCHANGE_ON_MCM_CHILD | When an MCM child network self-signsup for ad exchange but disconnects from the parent, then tries to re-enable again, this indicates that there was an error in re-enabling ad exchange. | 
| ERROR_SETTING_SITE_SERVING_MODE_ON_MCM_CHILD | The error shown when there is an issue setting the approved site serving field when re-enabling or disabling ad exchange on an MCM child. |