AI-generated Key Takeaways
- 
          The RequiredCollectionError is used for validating the sizes of collections within the API. 
- 
          This error object includes inherited fields from ApiError such as fieldPath, fieldPathElements, trigger, and errorString, which help identify the cause and details of the error. 
- 
          The RequiredCollectionError has a specific reason field with enumerated values indicating why the collection size requirement was not met, such as being missing, too large, or too small. 
A list of all errors to be used for validating sizes of collections.
- 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. | 
| RequiredCollectionError | |
| 
                            | 
                            
 Enumerations 
 |