AI-generated Key Takeaways
- 
          The page lists various Ad Manager API services including AdRuleService, AdjustmentService, and CompanyService. 
- 
          The content also details inheritance relationships, specifically showing various errors that inherit from ApiError, such as AuthenticationError and PermissionError. 
- 
          RequiredCollectionError is highlighted as an error type used for validating the sizes of collections. 
- 
          Details for RequiredCollectionError include fields like fieldPath, trigger, and reason, with reasons including REQUIRED, TOO_LARGE, TOO_SMALL, and UNKNOWN. 
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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