AI-generated Key Takeaways
- 
          RequiredSizeError is a type of ApiError used to validate the size of Creative and LineItem creative placeholders. 
- 
          It includes fields inherited from ApiError such as fieldPath, fieldPathElements, trigger, and errorString. 
- 
          RequiredSizeError has a specific reason field with possible values like REQUIRED, NOT_ALLOWED, and UNKNOWN, indicating why a size validation failed. 
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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