AI-generated Key Takeaways
- 
          NotNullError is a type of ApiError that occurs when a null value is provided for an attribute that cannot be null. 
- 
          It inherits fields from ApiError such as fieldPath, fieldPathElements, trigger, and errorString. 
- 
          The NotNullError has a specific reason field represented by an enum, indicating which argument or if the value was null. 
- 
          The possible reasons include ARG1_NULL, ARG2_NULL, ARG3_NULL, NULL, and UNKNOWN. 
Caused by supplying a null value for an attribute that cannot be null.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202505
| 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. | 
| NotNullError | |
| 
                            | The error reason represented by an enum. Enumerations 
 |