# Error messages and codes Error messages and codes for reports and endpoints. ## Topics ### Error objects for reports [`object DateTooFarInPastError`](/documentation/ExternalPurchaseServerAPI/DateTooFarInPastError) An error indicating that a provided date is too far in the past. [`object DuplicateTokenStatusNotAllowedError`](/documentation/ExternalPurchaseServerAPI/DuplicateTokenStatusNotAllowedError) An error indicating the duplicate token status is not allowed for the associated token type. [`object DuplicateValueError`](/documentation/ExternalPurchaseServerAPI/DuplicateValueError) An error indicating the field’s value is already submitted and a duplicate value is not expected. [`object ErroneousLineItemReferencedByValidLineItemError`](/documentation/ExternalPurchaseServerAPI/ErroneousLineItemReferencedByValidLineItemError) An error indicating the line item has status erroneously submitted but is referenced by a non-erroneously submitted line item. [`object ErroneouslySubmittedNotRestatementError`](/documentation/ExternalPurchaseServerAPI/ErroneouslySubmittedNotRestatementError) An error indicating the erroneously submitted line item was not marked as restatement. [`object ExchangeRateMismatchError`](/documentation/ExternalPurchaseServerAPI/ExchangeRateMismatchError) An error indicating the refund’s referenced buy line item has a different exchange rate. [`object FieldNotAllowedError`](/documentation/ExternalPurchaseServerAPI/FieldNotAllowedError) An error indicating the provided field is not allowed. [`object FutureDateError`](/documentation/ExternalPurchaseServerAPI/FutureDateError) An error indicating the provided date field is in the future and future values are not allowed. [`object IncorrectAmountTaxInclusiveError`](/documentation/ExternalPurchaseServerAPI/IncorrectAmountTaxInclusiveError) An error indicating the tax exclusive amount plus the tax amount does not equal the tax inclusive amount. [`object IncorrectNetAmountError`](/documentation/ExternalPurchaseServerAPI/IncorrectNetAmountError) An error indicating the net amount value does not match the expected value. [`object InvalidTaxInclusiveAmountForSubscriptionPaymentError`](/documentation/ExternalPurchaseServerAPI/InvalidTaxInclusiveAmountForSubscriptionPaymentError) An error indicating the tax inclusive amount must be positive for line items with a subscription payment subscription event. [`object LineItemCreationDateOutOfRangeError`](/documentation/ExternalPurchaseServerAPI/LineItemCreationDateOutOfRangeError) An error indicating the line item’s creation date is outside the active range of the token. [`object LineItemStatusRegressionError`](/documentation/ExternalPurchaseServerAPI/LineItemStatusRegressionError) An error indicating the status can’t be marked as no line item or unrecognized token after it was previously reported as a line item. [`object LineItemsNotAllowedForStatusError`](/documentation/ExternalPurchaseServerAPI/LineItemsNotAllowedForStatusError) An error indicating a line item was provided for an external purchase ID that has the status no line item or unrecognized token. [`object MaximumLengthExceededError`](/documentation/ExternalPurchaseServerAPI/MaximumLengthExceededError) An error indicating the field’s maximum length is exceeded. [`object MissingLineItemsForStatusError`](/documentation/ExternalPurchaseServerAPI/MissingLineItemsForStatusError) An error indicating the external purchase ID has the status line item but is missing line items. [`object NegativeValueNotAllowedError`](/documentation/ExternalPurchaseServerAPI/NegativeValueNotAllowedError) An error indicating the field does not allow a negative value. [`object NetAmountMismatchError`](/documentation/ExternalPurchaseServerAPI/NetAmountMismatchError) An error indicating two line items involved in the same net amount calculation have different net amount values. [`object NonInitialBuyReferencedByBuyError`](/documentation/ExternalPurchaseServerAPI/NonInitialBuyReferencedByBuyError) An error indicating the line item does not have subscription event initial buy but is referenced by a subscription line item with event type buy. [`object NotFoundError`](/documentation/ExternalPurchaseServerAPI/NotFoundError) An error indicating the referenced value was not found. [`object OmittedFieldError`](/documentation/ExternalPurchaseServerAPI/OmittedFieldError) An error indicating a required field is missing. [`object PositiveValueRequiredError`](/documentation/ExternalPurchaseServerAPI/PositiveValueRequiredError) An error indicating the field requires a positive value. [`object PricingCurrencyMismatchError`](/documentation/ExternalPurchaseServerAPI/PricingCurrencyMismatchError) An error indicating the refund’s referenced buy line item has a different pricing currency. [`object ReferenceInvalidSubscriptionEventError`](/documentation/ExternalPurchaseServerAPI/ReferenceInvalidSubscriptionEventError) An error indicating the referenced line item has no subscription event or its subscription event is not subscription start. [`object ReferenceLineItemNotABuyError`](/documentation/ExternalPurchaseServerAPI/ReferenceLineItemNotABuyError) An error indicating the referenced line item is not a buy. [`object ReferencedCreationDateIncompatibleError`](/documentation/ExternalPurchaseServerAPI/ReferencedCreationDateIncompatibleError) An error indicating the referenced line item has a creation date after the line item’s creation date. [`object RefundNotAllowedCreationDateError`](/documentation/ExternalPurchaseServerAPI/RefundNotAllowedCreationDateError) An error indicating the refund isn’t allowed for the line item because its creation date is too far in the past. [`object RefundReferencedByRefundError`](/documentation/ExternalPurchaseServerAPI/RefundReferencedByRefundError) An error indicating the line item has the refund event type but is referenced by a different line item that also has that type. [`object RestatementCreationDateMismatchError`](/documentation/ExternalPurchaseServerAPI/RestatementCreationDateMismatchError) An error indicating the creation date of the restatement line item doesn’t match the creation date of the original line item. [`object RestatementNotAllowedCreationDateError`](/documentation/ExternalPurchaseServerAPI/RestatementNotAllowedCreationDateError) An error indicating that restatement failed because the creation date is too far in the past. [`object RepeatErroneousSubmissionError`](/documentation/ExternalPurchaseServerAPI/RepeatErroneousSubmissionError) An error indicating the line item has status erroneously submitted but its previous version was already marked erroneously submitted. [`object ReportingCurrencyExchangeNotAllowedError`](/documentation/ExternalPurchaseServerAPI/ReportingCurrencyExchangeNotAllowedError) An error indicating that the reporting currency, which reports a currency exchange, isn’t allowed. [`object ReportingCurrencyMismatchError`](/documentation/ExternalPurchaseServerAPI/ReportingCurrencyMismatchError) An error indicating the refund’s referenced buy line item has a different reporting currency. [`object SelfReferenceError`](/documentation/ExternalPurchaseServerAPI/SelfReferenceError) An error indicating the line item references itself. [`object SimultaneousSubmissionError`](/documentation/ExternalPurchaseServerAPI/SimultaneousSubmissionError) An error indicating one or more simultaneous submissions of reports reference the same data. [`object StartDateAfterEndDateError`](/documentation/ExternalPurchaseServerAPI/StartDateAfterEndDateError) An error indicating the subscription data submitted is invalid because the start date is after the end date. [`object SubscriptionStartNonZeroDaysPaidServiceError`](/documentation/ExternalPurchaseServerAPI/SubscriptionStartNonZeroDaysPaidServiceError) An error indicating that the subscription days of paid service value is invalid because it’s non-zero for a subscription start line item. [`object TaxCountryMismatchError`](/documentation/ExternalPurchaseServerAPI/TaxCountryMismatchError) An error indicating the refund’s referenced buy line item has a different tax country. [`object UnknownEnumError`](/documentation/ExternalPurchaseServerAPI/UnknownEnumError) An error indicating the submission contained an invalid enum value. [`object ValidLineItemReferencesErroneousLineItemError`](/documentation/ExternalPurchaseServerAPI/ValidLineItemReferencesErroneousLineItemError) An error indicating the line item references an erroneously submitted line item, but the line item itself isn’t erroneously submitted. ### Error types [`int64 errorCode`](/documentation/ExternalPurchaseServerAPI/errorCode) An integer value that represents an error in the External Purchase Server API. [`string errorMessage`](/documentation/ExternalPurchaseServerAPI/errorMessage) A string that describes an error. [`string fieldName`](/documentation/ExternalPurchaseServerAPI/fieldName) A string that names a field of a line item. --- Copyright © 2026 Apple Inc. 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