diff --git a/ui/BankingUiCommon/src/commonMain/kotlin/net/dankito/banking/ui/model/mapper/IModelCreator.kt b/ui/BankingUiCommon/src/commonMain/kotlin/net/dankito/banking/ui/model/mapper/IModelCreator.kt
index c883f1f8..9223df61 100644
--- a/ui/BankingUiCommon/src/commonMain/kotlin/net/dankito/banking/ui/model/mapper/IModelCreator.kt
+++ b/ui/BankingUiCommon/src/commonMain/kotlin/net/dankito/banking/ui/model/mapper/IModelCreator.kt
@@ -26,33 +26,33 @@ interface IModelCreator {
         otherPartyAccountId: String?,
         bookingText: String?,
         valueDate: Date,
-        statementNumber: Int,
-        sequenceNumber: Int?,
-        openingBalance: BigDecimal?,
-        closingBalance: BigDecimal?,
+        statementNumber: Int = 1,
+        sequenceNumber: Int? = null,
+        openingBalance: BigDecimal? = null,
+        closingBalance: BigDecimal? = null,
 
-        endToEndReference: String?,
-        customerReference: String?,
-        mandateReference: String?,
-        creditorIdentifier: String?,
-        originatorsIdentificationCode: String?,
-        compensationAmount: String?,
-        originalAmount: String?,
-        sepaReference: String?,
-        deviantOriginator: String?,
-        deviantRecipient: String?,
-        referenceWithNoSpecialType: String?,
-        primaNotaNumber: String?,
-        textKeySupplement: String?,
+        endToEndReference: String? = null,
+        customerReference: String? = null,
+        mandateReference: String? = null,
+        creditorIdentifier: String? = null,
+        originatorsIdentificationCode: String? = null,
+        compensationAmount: String? = null,
+        originalAmount: String? = null,
+        sepaReference: String? = null,
+        deviantOriginator: String? = null,
+        deviantRecipient: String? = null,
+        referenceWithNoSpecialType: String? = null,
+        primaNotaNumber: String? = null,
+        textKeySupplement: String? = null,
 
-        currencyType: String?,
-        bookingKey: String,
-        referenceForTheAccountOwner: String,
-        referenceOfTheAccountServicingInstitution: String?,
-        supplementaryDetails: String?,
+        currencyType: String? = null,
+        bookingKey: String = "",
+        referenceForTheAccountOwner: String = "",
+        referenceOfTheAccountServicingInstitution: String? = null,
+        supplementaryDetails: String? = null,
 
-        transactionReferenceNumber: String,
-        relatedReferenceNumber: String?
+        transactionReferenceNumber: String = "",
+        relatedReferenceNumber: String? = null
     ) : IAccountTransaction