AI-generated Key Takeaways
- 
          RequiredCollectionError is a type of error used for validating the size of collections. 
- 
          RequiredCollectionError inherits from ApiError and includes a reason field to indicate why a collection failed validation. 
- 
          Possible reasons for a RequiredCollectionError include a missing collection, a collection that is too large or too small, or an unknown issue. 
- 
          ApiError provides common fields like fieldPath, fieldPathElements, trigger, and errorString to help identify the cause and details of an error. 
A list of all errors to be used for validating sizes of collections.
- 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. | 
| RequiredCollectionError | |
| 
                            | 
                            
 Enumerations 
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