Validation Rules
GroupReversalAndPaymentInformationNotPresentRule: If GroupHeader/GroupReversal is true, then OriginalPaymentInformationAndReversal is not allowed.
GroupReversalAndReasonRule: If GroupHeader/GroupReversal is true, then OriginalGroupInformation/ReversalReasonInformation/ReversalReason must present.
GroupReversalAndNumberOfTransactionsRule: If GroupHeader/GroupReversal is false, then NumberOfTransactions must equal the number of occurrences of TransactionInformation.
GroupReversalAndPaymentInformationPresentRule: If GroupHeader/GroupReversal is false, then at least one occurrence of OriginalPaymentInformationAndReversal must be present.