[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-13 UTC."],[],[],null,["# enum CustomFieldError.Reason (v202508)\n\n**Service** \n**CustomFieldService** **Dependencies** \n[CustomFieldError](/ad-manager/api/reference/v202508/CustomFieldService.CustomFieldError) \n▼\n**CustomFieldError.Reason**\n\nThe reasons for the target error.\n\n*** ** * ** ***\n\nNamespace\n:\n `https://www.google.com/apis/ads/publisher/v202508`\n\n| Enumeration | Description |\n|-----------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `INVALID_CUSTOM_FIELD_FOR_OPTION` | An attempt was made to create a [CustomFieldOption](/ad-manager/api/reference/v202508/CustomFieldService.CustomFieldOption) for a [CustomField](/ad-manager/api/reference/v202508/CustomFieldService.CustomField) that does not have [CustomFieldDataType.DROPDOWN](/ad-manager/api/reference/v202508/CustomFieldService.CustomFieldDataType#DROPDOWN). |\n| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |"]]
