# type AdUnitCodeError (v202505)

**Service** [ForecastService](https://developers.google.com/ad-manager/api/reference/v202505/ForecastService.AdUnitCodeError) **InventoryService** [PublisherQueryLanguageService](https://developers.google.com/ad-manager/api/reference/v202505/PublisherQueryLanguageService.AdUnitCodeError) **Inheritance** [ApiError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.ApiError) ▼ [AdSenseAccountError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.AdSenseAccountError) **AdUnitCodeError** [AdUnitHierarchyError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.AdUnitHierarchyError) [ApiVersionError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.ApiVersionError) [AuthenticationError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.AuthenticationError) [CollectionSizeError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.CollectionSizeError) [CommonError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.CommonError) [CompanyError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.CompanyError) [CreativeWrapperError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.CreativeWrapperError) [CrossSellError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.CrossSellError) [EntityChildrenLimitReachedE...](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.EntityChildrenLimitReachedError "EntityChildrenLimitReachedError") [EntityLimitReachedError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.EntityLimitReachedError) [FeatureError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.FeatureError) [FrequencyCapError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.FrequencyCapError) [InternalApiError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.InternalApiError) [InvalidColorError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.InvalidColorError) [InvalidUrlError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.InvalidUrlError) [InventoryUnitError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.InventoryUnitError) [InventoryUnitRefreshRateError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.InventoryUnitRefreshRateError) [InventoryUnitSizesError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.InventoryUnitSizesError) [LabelEntityAssociationError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.LabelEntityAssociationError) [NotNullError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.NotNullError) [NullError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.NullError) [ParseError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.ParseError) [PermissionError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.PermissionError) [PublisherQueryLanguageConte...](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.PublisherQueryLanguageContextError "PublisherQueryLanguageContextError") [PublisherQueryLanguageSynta...](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.PublisherQueryLanguageSyntaxError "PublisherQueryLanguageSyntaxError") [QuotaError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.QuotaError) [RangeError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.RangeError) [RegExError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.RegExError) [RequiredCollectionError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.RequiredCollectionError) [RequiredError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.RequiredError) [RequiredNumberError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.RequiredNumberError) [ServerError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.ServerError) [StatementError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.StatementError) [StringFormatError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.StringFormatError) [StringLengthError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.StringLengthError) [TeamError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.TeamError) [TypeError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.TypeError) [UniqueError](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.UniqueError)

Lists the generic errors associated with [AdUnit.adUnitCode](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.AdUnit#adUnitCode).

*** ** * ** ***

Namespace
:
    `https://www.google.com/apis/ads/publisher/v202505`

| ## Field ||
|---|---|
| **`ApiError` (inherited)** ||
| ### `fieldPath` | ` xsd:string` The OGNL field path to identify cause of error. |
| ### `fieldPathElements` | ` https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.FieldPathElement[]` 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)}. |
| ### `trigger` | ` xsd:string` The data that caused the error. |
| ### `errorString` | ` xsd:string` A simple string representation of the error and reason. |
| **`AdUnitCodeError`** ||
| ### `reason` | ` https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.AdUnitCodeError.Reason ` *** ** * ** *** **Enumerations** `INVALID_CHARACTERS` :   For [AdUnit.adUnitCode](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.AdUnit#adUnitCode), only alpha-numeric characters, underscores, hyphens, periods, asterisks, double quotes, back slashes, forward slashes, exclamations, left angle brackets, colons and parentheses are allowed. `INVALID_CHARACTERS_WHEN_UTF_CHARACTERS_ARE_ALLOWED` :   For [AdUnit.adUnitCode](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.AdUnit#adUnitCode), only letters, numbers, underscores, hyphens, periods, asterisks, double quotes, back slashes, forward slashes, exclamations, left angle brackets, colons and parentheses are allowed. `INVALID_CHARACTERS_FOR_LEGACY_AD_EXCHANGE_TAG` :   For [AdUnit.adUnitCode](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.AdUnit#adUnitCode) representing slot codes, only alphanumeric characters, underscores, hyphens, periods and colons are allowed. `LEADING_FORWARD_SLASH` :   For [AdUnit.adUnitCode](https://developers.google.com/ad-manager/api/reference/v202505/InventoryService.AdUnit#adUnitCode), forward slashes are not allowed as the first character. `RESERVED_CODE` :   Specific codes matching ca-\*pub-\*-tag are reserved for "Web Property IUs" generated as part of the SlotCode migration. `UNKNOWN` :   The value returned if the actual value is not exposed by the requested API version. <br /> |