May 2018 v1 API transactionID when parameters are not set

[jchalvorsen]

This seems to be going against the contract:

Internbank.Api.Contracts.Core.Bank.Transactions.v1.Transaction { accountingDate (string, optional), interestDate (string, optional), otherAccountNumber (string, optional), otherAccountNumberSpecified (boolean, optional), amount (number, optional), text (string, optional), transactionType (string, optional), transactionTypeCode (integer, optional), transactionTypeText (string, optional), isReservation (boolean, optional), reservationType (string, optional) = ['notReservation', 'visaReservation', 'purchaseReservation', 'atmReservation'], source (string, optional) = ['accountStatement', 'archive'], cardDetails (Internbank.Api.Contracts.Core.Bank.Transactions.v1.CardDetails, optional), cardDetailsSpecified (boolean, optional) }