AI-generated Key Takeaways
- 
          NullError indicates an error caused by providing a non-null value for an attribute that is expected to be null. 
- 
          This error inherits properties from ApiError, including fieldPath, fieldPathElements, trigger, and errorString, which help identify the cause and location of the error. 
- 
          The NullError specifically includes a 'reason' field, represented by an enum, which indicates the specific nullability constraint violation such as 'NOT_NULL' or an 'UNKNOWN' reason if the actual value is not exposed. 
Caused by supplying a non-null value for an attribute that should be null.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202508
| Field | |
|---|---|
| ApiError(inherited) | |
| 
                            | 
                            The OGNL field path to identify cause of error. | 
| 
                            | A parsed copy of the field path. For example, the field path "operations[1].operand" corresponds to this list: {FieldPathElement(field = "operations", index = 1), FieldPathElement(field = "operand", index = null)}. | 
| 
                            | 
                            The data that caused the error. | 
| 
                            | 
                            A simple string representation of the error and reason. | 
| NullError | |
| 
                            | The error reason represented by an enum. Enumerations 
 |