AI-generated Key Takeaways
- 
          RequiredSizeError is a type of error used for validating Size in the ForecastService. 
- 
          It is part of a hierarchy of errors that inherits from ApiError. 
- 
          Key fields include fieldPath, fieldPathElements, trigger, and errorString from the inherited ApiError, and reason from RequiredSizeError. 
- 
          Possible reasons for RequiredSizeError include missing size for Creative or LineItem, or sizes in LineItemCreativeAssociation not being a subset of LineItem creative placeholders. 
A list of all errors to be used for validating Size.
- 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. | 
| RequiredSizeError | |
| 
                            | 
 Enumerations 
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