Possible enhanced conversions configs.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/enums/enhanced_conversions_config.proto)

| Enums ||
|---|---|
| ## `OFF` | Customer explicitly turned off Enhanced Conversions. |
| ## `ON` | Customer explicitly turned on Enhanced Conversions. |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |