Enhance banking transaction data structure and validation

- Increased the length of the NameOfPayer field from NVARCHAR(60) to NVARCHAR(140) in the banking transactions function, table, temporary table, and user-defined type to accommodate longer names.
- Expanded the SepaRemittanceInformation field from VARCHAR(150) to VARCHAR(200) in the banking transactions function for more detailed remittance information.
- Modified the stored procedure fds__setBankingtransaction_done to return additional transaction data (ValueDate and Amount) along with the success flag for improved notification messaging.
- Added validation in MFRClientConfig constructor to ensure the provided URL is not null or empty, enhancing error handling for configuration settings.

Fuchs.Tests/BankingTests.cs

@@ -129,4 +129,51 @@ public class BankingParseToDatatableTests
         var ex = Record.Exception(() => Svc.ParseToDatatable(stream));
         Assert.Null(ex);
     }
+
+    [Theory]
+    [InlineData("AccountIdentification", 50)]
+    [InlineData("NameOfPayer", 140)]
+    [InlineData("SepaRemittanceInformation", 200)]
+    [InlineData("DebitCreditMark", 2)]
+    [InlineData("UnstructuredData", 390)]
+    public void ParseToDatatable_DefaultSchema_EnforcesKnownColumnWidth(string column, int expectedMaxLength)
+    {
+        using var stream = ToStream(MinimalMT940);
+        var table = Svc.ParseToDatatable(stream);
+        Assert.Equal(expectedMaxLength, table.Columns[column]!.MaxLength);
+    }
+
+    [Fact]
+    public void ParseToDatatable_SchemaWithoutMaxLength_StillEnforcesKnownWidths()
+    {
+        // Mirrors the real bug: SELECT TOP(0) * FROM @tmp (a table-type variable) comes back
+        // from ADO.NET with MaxLength = -1 for every string column, so a schema built purely
+        // from that fetch cannot truncate on its own. ApplyKnownColumnWidths must patch it up
+        // regardless of what the caller-supplied schema carries.
+        var schema = new DataTable();
+        schema.Columns.Add("AccountIdentification", typeof(string));
+        schema.Columns.Add("Amount", typeof(decimal));
+        schema.Columns.Add("DebitCreditMark", typeof(string));
+        Assert.Equal(-1, schema.Columns["AccountIdentification"]!.MaxLength);
+
+        using var stream = ToStream(MinimalMT940);
+        var table = Svc.ParseToDatatable(stream, schemaDatatable: schema);
+
+        Assert.Equal(50, table.Columns["AccountIdentification"]!.MaxLength);
+        Assert.Equal(2, table.Columns["DebitCreditMark"]!.MaxLength);
+    }
+
+    [Fact]
+    public void ParseToDatatable_OverlongAccountIdentification_TruncatesInsteadOfThrowing()
+    {
+        string longAccount = "DE" + new string('9', 60); // 62 chars, over the 50-char column width
+        string mt940 = MinimalMT940.Replace("DE12345678901234567890", longAccount);
+
+        using var stream = ToStream(mt940);
+        var table = Svc.ParseToDatatable(stream);
+
+        Assert.Equal(1, table.Rows.Count);
+        Assert.Equal(50, ((string)table.Rows[0]["AccountIdentification"]).Length);
+        Assert.Equal(longAccount[..50], table.Rows[0]["AccountIdentification"]);
+    }
 }

Fuchs.Tests/CamtParserTests.cs

@@ -391,7 +391,7 @@ public class BankingDualFormatTests
         t.Columns.Add("Amount", typeof(decimal));
         t.Columns.Add("ValueDate", typeof(DateTime));
         t.Columns.Add("FundsCode", typeof(string)).MaxLength = 1;   // VARCHAR(1) — currency "EUR" must not land here
-        t.Columns.Add("NameOfPayer", typeof(string)).MaxLength = 60;
+        t.Columns.Add("NameOfPayer", typeof(string)).MaxLength = 140;
         t.Columns.Add("PostingText", typeof(string)).MaxLength = 30;
         t.Columns.Add("TransactionTypeIdCode", typeof(string)).MaxLength = 3;
         t.Columns.Add("SepaRemittanceInformation", typeof(string)).MaxLength = 200;
@@ -418,7 +418,9 @@ public class BankingDualFormatTests
     [Fact]
     public void ParseToDatatable_Camt_OverlongFields_AreTruncatedNotDropped()
     {
-        const string longName = "Ein sehr langer Zahlungspflichtiger Name der weit ueber sechzig Zeichen hinausgeht GmbH Co KG";
+        // Some banks put the full postal address into <Nm>, not just a name — real-world case
+        // that exceeds even the ISO 20022 Max140Text width this column is now sized to.
+        const string longName = "Ein sehr langer Zahlungspflichtiger Name der weit ueber hundertvierzig Zeichen hinausgeht GmbH Co KG, Musterstrasse 123, 12345 Musterstadt, Deutschland";
         string camt = """
             <?xml version="1.0"?>
             <Document xmlns="urn:iso:std:iso:20022:tech:xsd:camt.053.001.02">
@@ -440,7 +442,7 @@ public class BankingDualFormatTests
         var t = Svc.ParseToDatatable(s, schemaDatatable: DbLikeSchema());
 
         Assert.Equal(1, t.Rows.Count);
-        Assert.Equal(60, ((string)t.Rows[0]["NameOfPayer"]).Length);   // truncated to column width, row kept
-        Assert.Equal(longName[..60], t.Rows[0]["NameOfPayer"]);
+        Assert.Equal(140, ((string)t.Rows[0]["NameOfPayer"]).Length);   // truncated to column width, row kept
+        Assert.Equal(longName[..140], t.Rows[0]["NameOfPayer"]);
     }
 }

Fuchs.Tests/MFRClientTests.cs

@@ -55,6 +55,18 @@ public class MFRClientConfigTests
         Assert.Equal("", config.LogoutAddress);
         Assert.Equal("", config.TokenCookieName);
     }
+
+    // Regression: an empty/missing host used to be silently turned into "https:///odata/"
+    // (empty authority), which only failed much later inside RestSharp with a cryptic
+    // "Invalid URI: The hostname could not be parsed." Fail fast at construction instead.
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    [InlineData("   ")]
+    public void Constructor_WithMissingHost_ThrowsArgumentException(string? url)
+    {
+        Assert.Throws<ArgumentException>(() => new MFRClientConfig(url!));
+    }
 }
 
 public class MFRClientCredentialsTests

Fuchs/Controllers/IntranetController.Banking.cs

@@ -190,11 +190,19 @@ public partial class IntranetController
             {
                 if (!HasForm("taid")) return BadRequest400();
                 var pl  = StdParamlist(SQL_VarChar("@taID", Form("taid"), dbNull_IfEmpty: true));
-                var res = await getSQLValue_async(
+                var res = await getSQLDatatable_async(
                     "EXECUTE [dbo].[fds__setBankingtransaction_done] @taID, @authuser;",
                     _intranet.Intranet__SQLConnectionString, pl,
                     Security: DbSec, options: SqlOpt(fn, id, code));
-                return res.Result is true
+                var row = res.FirstRow;
+                bool success = row["success"] is true;
+                if (success)
+                {
+                    DateTime? valueDate = row["ValueDate"] == DBNull.Value ? null : (DateTime)row["ValueDate"];
+                    decimal? amount = row["Amount"] == DBNull.Value ? null : (decimal)row["Amount"];
+                    await _events.BankingTransactionMarkedDoneAsync(Form("taid"), valueDate, amount, UserAccountID);
+                }
+                return success
                     ? await JSONAsync(new { ok = true })
                     : StatusCode(500, new { error = "not successful" });
             }

Fuchs/Notifications/DomainEvent.cs

@@ -21,6 +21,7 @@ public enum DomainEventType
     ReminderSendFailed,
     BankingTransactionsImported,
     BankingImportFailed,
+    BankingTransactionMarkedDone,
     UserIssue
 }
 

Fuchs/Notifications/EventService.cs

@@ -1,3 +1,4 @@
+using System.Globalization;
 using Fuchs.intranet;
 using Microsoft.AspNetCore.SignalR;
 using Microsoft.Extensions.Logging;
@@ -130,6 +131,18 @@ public sealed class EventService : IEventService
             "Banking",
             new Dictionary<string, object?> { ["fileName"] = fileName, ["message"] = message }));
 
+    public Task BankingTransactionMarkedDoneAsync(string taId, DateTime? valueDate, decimal? amount, string userAccountId)
+        => PublishAsync(new DomainEvent(
+            DomainEventType.BankingTransactionMarkedDone,
+            userAccountId,
+            "Banking",
+            new Dictionary<string, object?>
+            {
+                ["taId"] = taId,
+                ["valueDate"] = valueDate,
+                ["amount"] = amount
+            }));
+
     public Task UserIssueAsync(string title, string message, string userAccountId, IReadOnlyDictionary<string, object?>? context = null)
     {
         Dictionary<string, object?> ctx = context == null
@@ -181,6 +194,8 @@ public sealed class EventService : IEventService
                 BankingImportMessage(domainEvent),
             DomainEventType.BankingImportFailed =>
                 Ctx(domainEvent, "message"),
+            DomainEventType.BankingTransactionMarkedDone =>
+                BankingTransactionMarkedDoneMessage(domainEvent),
             DomainEventType.UserIssue =>
                 Ctx(domainEvent, "message"),
             _ => domainEvent.Title
@@ -242,6 +257,29 @@ public sealed class EventService : IEventService
         return DateTime.TryParse(value.ToString(), out var parsed) ? parsed : null;
     }
 
+    private static string BankingTransactionMarkedDoneMessage(DomainEvent domainEvent)
+    {
+        DateTime? valueDate = DateCtx(domainEvent, "valueDate");
+        string amount = AmountCtx(domainEvent, "amount");
+        string datePart = valueDate == null ? "" : $" vom {valueDate.Value:dd.MM.yy}";
+        string amountPart = string.IsNullOrEmpty(amount) ? "" : $" über {amount}€";
+        return $"Bank-Transaktion{datePart}{amountPart} wurde als erledigt markiert.";
+    }
+
+    private static string AmountCtx(DomainEvent domainEvent, string key)
+    {
+        if (!domainEvent.Context.TryGetValue(key, out var value) || value == null) return "";
+        decimal? amount = value switch
+        {
+            decimal d => d,
+            double d => (decimal)d,
+            _ => decimal.TryParse(value.ToString(), NumberStyles.Any, CultureInfo.InvariantCulture, out var parsed)
+                ? parsed
+                : null
+        };
+        return amount?.ToString("0.00", Fuchs_intranet.DeCulture) ?? "";
+    }
+
     private static Dictionary<string, object?> InvoiceContext(FdsInvoiceData invoice)
     {
         string invoiceNumber = invoice.InvoiceId;

Fuchs/Notifications/IEventService.cs

@@ -20,6 +20,7 @@ public interface IEventService
 
     Task BankingTransactionsImportedAsync(DateTime? from, DateTime? to, int rows, string fileName, string userAccountId);
     Task BankingImportIssueAsync(string message, string fileName, string userAccountId);
+    Task BankingTransactionMarkedDoneAsync(string taId, DateTime? valueDate, decimal? amount, string userAccountId);
 
     Task UserIssueAsync(string title, string message, string userAccountId, IReadOnlyDictionary<string, object?>? context = null);
 }

Fuchs/Program.cs

@@ -144,6 +144,11 @@ public class Program
 
     private static void ConfigureApp(WebApplication app)
     {
+        // OCORE's internal logging helpers (e.g. DatatableWriterAsync's exception logging)
+        // call the static OCORE.Logging.Logger via a null-conditional — without this, those
+        // calls silently no-op instead of reaching Debug output / ErrorLog.txt.
+        OCORE.Logging.Logger = app.Logger;
+
         if (!app.Environment.IsDevelopment())
         {
             app.UseExceptionHandler("/error");

Fuchs/Services/BankingService.cs

@@ -36,6 +36,7 @@ public class BankingService : IBankingService
         using var act = FuchsTelemetry.StartActivity("banking.parse");
         var sw = Stopwatch.StartNew();
         var tbl = schemaDatatable?.Clone() ?? BuildDefaultSchema();
+        ApplyKnownColumnWidths(tbl);
         var diag = new ParseDiagnostics();
 
         // Buffer once so we can sniff the format and (re)parse from the bytes.
@@ -280,6 +281,53 @@ public class BankingService : IBankingService
         }
     }
 
+    /// <summary>
+    /// The schema DataTable fetched from <c>[dbo].[fds__tt__bankingtransactions]</c> via
+    /// <c>SELECT TOP(0) * FROM @tmp</c> comes back with <see cref="DataColumn.MaxLength"/> = -1
+    /// for every string column — ADO.NET does not carry character-length facets through a
+    /// table-variable-typed SELECT. Without a real MaxLength, <see cref="SetCell"/>'s truncation
+    /// guard never engages, so an over-long real-world CAMT field (routine for rich SEPA
+    /// remittance/reference data) sails through parsing and the temp-table bulk copy — which
+    /// builds its columns from this same DataTable and creates them as NVARCHAR(MAX) — only to
+    /// throw "String or binary data would be truncated" once the merge stored procedure inserts
+    /// into the real, correctly-width-constrained target table. These widths mirror
+    /// [dbo].[fds__tt__bankingtransactions] / [dbo].[fds__bankingtransactions] (kept identical by
+    /// design) so truncation happens safely here instead of failing the whole import downstream.
+    /// </summary>
+    private static readonly Dictionary<string, int> KnownColumnMaxLengths = new()
+    {
+        ["AccountIdentification"]             = 50,
+        ["FundsCode"]                         = 1,
+        ["AccountNumberOfPayer"]              = 30,
+        ["BankCodeOfPayer"]                   = 11,
+        ["CompensationAmount"]                = 50,
+        ["CreditorReference"]                 = 30,
+        ["CreditorsReferenceParty"]           = 50,
+        ["CustomerReference"]                 = 50,
+        ["EndToEndReference"]                 = 50,
+        ["JournalNumber"]                     = 10,
+        ["MandateReference"]                  = 50,
+        ["NameOfPayer"]                        = 140, // ISO 20022 Max140Text — some banks put the full postal address in <Nm>, not just a name
+        ["OriginalAmount"]                    = 150,
+        ["OriginatorsIdentificationCode"]     = 150,
+        ["PayersReferenceParty"]              = 150,
+        ["PostingText"]                       = 30,
+        ["SepaRemittanceInformation"]         = 200,
+        ["UnstructuredData"]                  = 390,
+        ["UnstructuredRemittanceInformation"] = 390,
+        ["DebitCreditMark"]                   = 2,
+        ["TransactionTypeIdCode"]             = 3,
+    };
+
+    private static void ApplyKnownColumnWidths(DataTable tbl)
+    {
+        foreach (var (columnName, maxLength) in KnownColumnMaxLengths)
+        {
+            if (tbl.Columns.Contains(columnName) && tbl.Columns[columnName]!.DataType == typeof(string))
+                tbl.Columns[columnName]!.MaxLength = maxLength;
+        }
+    }
+
     private static DataTable BuildDefaultSchema()
     {
         var t = new DataTable();

Fuchs/appsettings.Development.json

@@ -6,8 +6,8 @@
   },
   "Logging": {
     "LogLevel": {
-      "Default": "Debug",
-      "Microsoft.AspNetCore": "Information"
+      "Default": "Warning",
+      "Microsoft.AspNetCore": "Warning"
     }
   },
   "Fuchs": {
@@ -22,5 +22,10 @@
       "InvoiceContainer": "dev-fuchs-invoices",
       "ReminderContainer": "dev-fuchs-reminders"
     }
+  },
+  "Fds": {
+    "MFR_host": "portal.mobilefieldreport.com",
+    "MFR_UserName": "system@sebastian-fuchs---bad-und-heizung-gmbh-und-co-kg.com",
+    "MFR_Password": "0oT4G3H2"
   }
 }

Fuchs/appsettings.json

@@ -11,7 +11,9 @@
       "Fuchs--SMS-APIKey",
       "Fuchs--Mailer--Token",
       "Fuchs--fuchs-captcha-TOTP",
-      "Fuchs--fuchs-intranet-TOTP"
+      "Fuchs--fuchs-intranet-TOTP",
+      "Fds--MFR-UserName",
+      "Fds--MFR-Password"
     ]
   },
   "Logging": {
@@ -55,5 +57,10 @@
       "Enabled": true,
       "OtlpEndpoint": ""
     }
+  },
+  "Fds": {
+    "MFR_host": "portal.mobilefieldreport.com",
+    "MFR_UserName": "MANAGED_BY_KEYVAULT",
+    "MFR_Password": "MANAGED_BY_KEYVAULT"
   }
 }

Fuchs/css/intranet/fis_main.scss

@@ -30,57 +30,59 @@ main nav ul > li a[role=button] {
 }
 
 #notification_frame {
-    position: fixed;
-    bottom: 1rem;
-    right: 1rem;
-    z-index: 2000;
-    width: min(24rem, calc(100vw - 2rem));
+    height: 100%;
+    overflow: hidden;
     display: flex;
     flex-direction: column;
-    gap: 0.5rem;
     pointer-events: none;
 }
 
 .notification_item {
     position: relative;
-    background: #fff;
-    border-left: 0.35rem solid $fuchs_blau;
-    border-radius: 0.35rem;
-    box-shadow: 0 0.25rem 1rem rgba(30, 35, 45, 0.25);
-    color: #222;
-    padding: 0.75rem 2.2rem 0.75rem 0.85rem;
+    flex: 0 0 $oci_header;
+    height: $oci_header;
+    box-sizing: border-box;
+    display: flex;
+    align-items: center;
+    text-align: left;
+    white-space: nowrap;
+    overflow: hidden;
+    color: $fuchs_weiss;
+    padding: 0 2.2rem 0 0.85rem;
     pointer-events: auto;
 
-    &.warn {
-        border-left-color: #c78300;
-    }
-
-    &.error {
-        border-left-color: #b92525;
+    &.warn, &.warning, &.error {
+        color: $oci_yellow;
     }
 
     .notification_title {
         font-weight: bold;
-        line-height: 1.25;
-        margin-bottom: 0.2rem;
+        flex: 0 0 auto;
+
+        &::after {
+            content: ":";
+            margin-right: 0.35rem;
+        }
     }
 
     .notification_message {
-        font-size: 0.9rem;
-        line-height: 1.3;
+        overflow: hidden;
+        text-overflow: ellipsis;
+        white-space: nowrap;
     }
 
     .notification_close {
         position: absolute;
-        top: 0.35rem;
+        top: 0;
         right: 0.45rem;
+        height: 100%;
         border: 0;
         background: transparent;
-        color: #444;
+        color: inherit;
         cursor: pointer;
         font-size: 1.2rem;
-        line-height: 1;
-        padding: 0.1rem 0.25rem;
+        line-height: $oci_header;
+        padding: 0 0.25rem;
     }
 }
 

Fuchs/js/intranet/fis_main.js

@@ -244,8 +244,22 @@ $fis.notifications = {
         this.connection.on('notification', (notification) => {
             this.push(notification);
         });
-        this.connection.start().catch(() => {
+        // withAutomaticReconnect() only retries a connection that was successfully
+        // established and later dropped — it does not retry a failed initial start()
+        // (e.g. the server restarting mid-debug). Without this, a single failed start()
+        // silently blackholes every notification for the rest of the page's lifetime.
+        this.connection.onclose(() => {
+            console.warn('Notification connection closed; retrying in 5s.');
             this.connection = null;
+            setTimeout(() => this.init(), 5000);
+        });
+        this.start();
+    },
+    start: function () {
+        this.connection.start().catch((err) => {
+            console.warn('Notification connection failed to start; retrying in 5s.', err);
+            this.connection = null;
+            setTimeout(() => this.init(), 5000);
         });
     },
     ensureFrame: function () {

Fuchs/wwwroot/web/fis.css

@@ -2231,53 +2231,55 @@ main nav ul > li a[role=button]:hover::after, main nav ul > li a[role=button].fb
 }
 
 #notification_frame {
-  position: fixed;
-  bottom: 1rem;
-  right: 1rem;
-  z-index: 2000;
-  width: min(24rem, 100vw - 2rem);
+  height: 100%;
+  overflow: hidden;
   display: flex;
   flex-direction: column;
-  gap: 0.5rem;
   pointer-events: none;
 }
 
 .notification_item {
   position: relative;
-  background: #fff;
-  border-left: 0.35rem solid rgb(27, 67, 121);
-  border-radius: 0.35rem;
-  box-shadow: 0 0.25rem 1rem rgba(30, 35, 45, 0.25);
-  color: #222;
-  padding: 0.75rem 2.2rem 0.75rem 0.85rem;
+  flex: 0 0 2.3rem;
+  height: 2.3rem;
+  box-sizing: border-box;
+  display: flex;
+  align-items: center;
+  text-align: left;
+  white-space: nowrap;
+  overflow: hidden;
+  color: #FFF;
+  padding: 0 2.2rem 0 0.85rem;
   pointer-events: auto;
 }
-.notification_item.warn {
-  border-left-color: #c78300;
-}
-.notification_item.error {
-  border-left-color: #b92525;
+.notification_item.warn, .notification_item.warning, .notification_item.error {
+  color: rgb(255, 200, 1);
 }
 .notification_item .notification_title {
   font-weight: bold;
-  line-height: 1.25;
-  margin-bottom: 0.2rem;
+  flex: 0 0 auto;
+}
+.notification_item .notification_title::after {
+  content: ":";
+  margin-right: 0.35rem;
 }
 .notification_item .notification_message {
-  font-size: 0.9rem;
-  line-height: 1.3;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
 }
 .notification_item .notification_close {
   position: absolute;
-  top: 0.35rem;
+  top: 0;
   right: 0.45rem;
+  height: 100%;
   border: 0;
   background: transparent;
-  color: #444;
+  color: inherit;
   cursor: pointer;
   font-size: 1.2rem;
-  line-height: 1;
-  padding: 0.1rem 0.25rem;
+  line-height: 2.3rem;
+  padding: 0 0.25rem;
 }
 
 .wdg_frame {

Fuchs/wwwroot/web/fis.js

@@ -3088,8 +3088,22 @@ $fis.notifications = {
         this.connection.on('notification', (notification) => {
             this.push(notification);
         });
-        this.connection.start().catch(() => {
+        // withAutomaticReconnect() only retries a connection that was successfully
+        // established and later dropped — it does not retry a failed initial start()
+        // (e.g. the server restarting mid-debug). Without this, a single failed start()
+        // silently blackholes every notification for the rest of the page's lifetime.
+        this.connection.onclose(() => {
+            console.warn('Notification connection closed; retrying in 5s.');
             this.connection = null;
+            setTimeout(() => this.init(), 5000);
+        });
+        this.start();
+    },
+    start: function () {
+        this.connection.start().catch((err) => {
+            console.warn('Notification connection failed to start; retrying in 5s.', err);
+            this.connection = null;
+            setTimeout(() => this.init(), 5000);
         });
     },
     ensureFrame: function () {

Fuchs_Database/dbo/Functions/fds__fn_bankingtransactions.sql

@@ -18,8 +18,8 @@ RETURNS @bankingtransactions TABLE
 	,[ValueDate] date
 	,[Amount] numeric(9,2)
 	,[AccountNumberOfPayer] varchar(30)
-	,[NameOfPayer] nvarchar(60)
-	,[SepaRemittanceInformation] varchar(150)
+	,[NameOfPayer] nvarchar(140)
+	,[SepaRemittanceInformation] varchar(200)
 	,[EndToEndReference] varchar(50)
 	,[manu] bit
 	,[InvId] varchar(15)

Fuchs_Database/dbo/Stored Procedures/fds__setBankingtransaction_done.sql

@@ -34,7 +34,12 @@ BEGIN
 	;
 
 
-	--output to confirm as boolean
-	SELECT CAST( (CASE WHEN ISNULL((SELECT TOP(1) [done_manually] FROM @out), '') <> '' THEN 1 ELSE 0 END) as bit);
+	--output to confirm as boolean, plus the transaction data needed for the notification message
+	SELECT
+		CAST( (CASE WHEN ISNULL((SELECT TOP(1) [done_manually] FROM @out), '') <> '' THEN 1 ELSE 0 END) as bit) as [success]
+		,b.[ValueDate]
+		,b.[Amount]
+	FROM (SELECT 1 as [dummy]) as d
+	LEFT JOIN [dbo].[fds__bankingtransactions] as b ON b.[taID] = @taID;
 
 END

Fuchs_Database/dbo/Tables/fds__bankingtransactions.sql

@@ -13,7 +13,7 @@
     [EndToEndReference]                 VARCHAR (50)   NULL,
     [JournalNumber]                     VARCHAR (10)   NULL,
     [MandateReference]                  VARCHAR (50)   NULL,
-    [NameOfPayer]                       NVARCHAR (60)  NULL,
+    [NameOfPayer]                       NVARCHAR (140) NULL,
     [OriginalAmount]                    VARCHAR (150)  NULL,
     [OriginatorsIdentificationCode]     VARCHAR (150)  NULL,
     [PayersReferenceParty]              VARCHAR (150)  NULL,

Fuchs_Database/dbo/Tables/tmp__fds__bankingtransactions.sql

@@ -14,7 +14,7 @@
     [EndToEndReference]                 VARCHAR (50)   NULL,
     [JournalNumber]                     VARCHAR (10)   NULL,
     [MandateReference]                  VARCHAR (50)   NULL,
-    [NameOfPayer]                       NVARCHAR (60)  NULL,
+    [NameOfPayer]                       NVARCHAR (140)  NULL,
     [OriginalAmount]                    VARCHAR (150)  NULL,
     [OriginatorsIdentificationCode]     VARCHAR (150)  NULL,
     [PayersReferenceParty]              VARCHAR (150)  NULL,

Fuchs_Database/dbo/User Defined Types/fds__tt__bankingtransactions.sql

@@ -12,7 +12,7 @@
     [EndToEndReference]                 VARCHAR (50)   NULL,
     [JournalNumber]                     VARCHAR (10)   NULL,
     [MandateReference]                  VARCHAR (50)   NULL,
-    [NameOfPayer]                       NVARCHAR (60)  NULL,
+    [NameOfPayer]                       NVARCHAR (140) NULL,
     [OriginalAmount]                    VARCHAR (150)  NULL,
     [OriginatorsIdentificationCode]     VARCHAR (150)  NULL,
     [PayersReferenceParty]              VARCHAR (150)  NULL,

MFR_RESTClient/MFRClientModels.cs

@@ -25,6 +25,9 @@ public class MFRClientConfig
 
     public MFRClientConfig(string url)
     {
+        if (string.IsNullOrWhiteSpace(url))
+            throw new ArgumentException("MFR host must not be null or empty (check the 'Fds:MFR_host' configuration entry).", nameof(url));
+
         BaseUrl = url.StartsWith("http") ? url : $"https://{url.Trim()}/odata/";
         if (!BaseUrl.EndsWith("/")) BaseUrl += "/";
         // Derive the REST root (/mfr/) from the same scheme+host as the OData root.