AI-generated Key Takeaways
- 
          RequiredSizeError is a type of error used for validating the Size in various services like CreativeService, CreativeSetService, and ForecastService. 
- 
          This error inherits from ApiError and includes fields such as fieldPath, fieldPathElements, trigger, and errorString. 
- 
          The RequiredSizeError specifically includes a 'reason' field with possible enumeration values like REQUIRED,NOT_ALLOWED, andUNKNOWN.
- 
          The REQUIREDreason indicates a missing size for Creative or LineItem creativePlaceholders, whileNOT_ALLOWEDsignifies that LineItemCreativeAssociation sizes are not a subset of LineItem creativePlaceholders sizes.
A list of all errors to be used for validating Size.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202502
| 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 
 |