diff --git a/src/DisabledTests/Expense_Agent_Tests/Expense_Agent_Tests.DisabledTest.json b/src/DisabledTests/Expense_Agent_Tests/Expense_Agent_Tests.DisabledTest.json
index f1181ff4635..9d1b6f9a519 100644
--- a/src/DisabledTests/Expense_Agent_Tests/Expense_Agent_Tests.DisabledTest.json
+++ b/src/DisabledTests/Expense_Agent_Tests/Expense_Agent_Tests.DisabledTest.json
@@ -119,26 +119,6 @@
     "codeunitName": "Expense Projects API Test",
     "method": "AssignedProjectsBlockedWhenProjectFieldsDisabledViaAPI"
   },
-  {
-    "codeunitId": 148302,
-    "codeunitName": "Expense Report Posting Test",
-    "method": "ExpenseReportIsPostedWithCurrencyOnHeaderAndExchangeRateForExpensesIsExpenseDate"
-  },
-  {
-    "codeunitId": 148302,
-    "codeunitName": "Expense Report Posting Test",
-    "method": "ExpenseReportIsPostedWithCurrencyOnHeaderAndExchangeRateForExpensesIsPostingDate"
-  },
-  {
-    "codeunitId": 148302,
-    "codeunitName": "Expense Report Posting Test",
-    "method": "ExpenseReportIsPostedWithFCYOnHeaderAndExchangeRateForExpensesIsPostingDateWithMultipleFCYLinesAndEmployeePaid"
-  },
-  {
-    "codeunitId": 148302,
-    "codeunitName": "Expense Report Posting Test",
-    "method": "ExpenseReportIsPostedWithFCYOnHeaderAndExchangeRateForExpensesIsExpenseDateWithMultipleFCYLinesAndEmployeePaid"
-  },
   {
     "codeunitId": 148305,
     "codeunitName": "Expense Test",
diff --git a/src/Layers/ES/BaseApp/Finance/GeneralLedger/Posting/GenJnlPostLine.Codeunit.al b/src/Layers/ES/BaseApp/Finance/GeneralLedger/Posting/GenJnlPostLine.Codeunit.al
index 9dd1fba0ebe..f4aaf54c555 100644
--- a/src/Layers/ES/BaseApp/Finance/GeneralLedger/Posting/GenJnlPostLine.Codeunit.al
+++ b/src/Layers/ES/BaseApp/Finance/GeneralLedger/Posting/GenJnlPostLine.Codeunit.al
@@ -5958,6 +5958,7 @@ codeunit 12 "Gen. Jnl.-Post Line"
         IsHandled: Boolean;
         PayableAccAmtLCY: Decimal;
         PayableAccAmtAddCurr: Decimal;
+        AmountSrcCurr: Decimal;
     begin
         if GenJnlLine."Account Type" <> GenJnlLine."Account Type"::Employee then
             exit;
@@ -6007,9 +6008,17 @@ codeunit 12 "Gen. Jnl.-Post Line"
             if (PayableAccAmtLCY <> 0) or
                ((PayableAccAmtAddCurr <> 0) and (AddCurrencyCode <> ''))
             then begin
+                if (GenJnlLine."Source Currency Code" <> '') and (GenJnlLine."Source Currency Code" = GenJnlLine."Currency Code") and
+                    (GenJnlLine.Amount <> 0) and (GenJnlLine."Amount (LCY)" <> 0) and (Abs(GenJnlLine."Amount (LCY)") = Abs(PayableAccAmtLCY))
+                then begin
+                    AmountSrcCurr := Abs(GenJnlLine.Amount);
+                    if PayableAccAmtLCY < 0 then
+                        AmountSrcCurr := -AmountSrcCurr;
+                end else
+                    AmountSrcCurr := CalcAmountSrcCurr(GenJnlLine, PayableAccAmtLCY);
                 InitGLEntry(
                     GenJnlLine, GLEntry, AccNo, PayableAccAmtLCY, PayableAccAmtAddCurr, true, true,
-                    CalcAmountSrcCurr(GenJnlLine, PayableAccAmtLCY));
+                    AmountSrcCurr);
                 GLEntry."Bal. Account Type" := GenJnlLine."Bal. Account Type";
                 GLEntry."Bal. Account No." := GenJnlLine."Bal. Account No.";
                 UpdateGLEntryNo(GLEntry."Entry No.", SaveEntryNo);
diff --git a/src/Layers/ES/Tests/ERM-Finance/ERMSourceCurrency.Codeunit.al b/src/Layers/ES/Tests/ERM-Finance/ERMSourceCurrency.Codeunit.al
index 89bc73c6c7d..c029fac6134 100644
--- a/src/Layers/ES/Tests/ERM-Finance/ERMSourceCurrency.Codeunit.al
+++ b/src/Layers/ES/Tests/ERM-Finance/ERMSourceCurrency.Codeunit.al
@@ -11,6 +11,7 @@ codeunit 134897 "ERM Source Currency"
         LibraryPurchase: Codeunit "Library - Purchase";
         LibrarySales: Codeunit "Library - Sales";
         LibraryFiscalYear: Codeunit "Library - Fiscal Year";
+        LibraryHumanResource: Codeunit "Library - Human Resource";
         isInitialized: Boolean;
         AmountIncorrectSignErr: Label 'The Source Currency Amount should have the same sign as the amount on the G/L Entry', Locked = true;
         VATAmountIncorrectErr: Label 'The Source Currency Amount should be equal to the amount %1 multiplied by the VAT % %2', Locked = true;
@@ -1930,6 +1931,52 @@ codeunit 134897 "ERM Source Currency"
         Assert.AreEqual(-InvoiceAmount, GLEntry."Source Currency Amount", PayablesSCYAmountErr);
     end;
 
+    [Test]
+    procedure EmployeeFCYPaymentPayablesGLEntryHasCorrectSCYAmount()
+    var
+        Employee: Record Employee;
+        EmployeePostingGroup: Record "Employee Posting Group";
+        Currency: Record Currency;
+        GenJournalLine: Record "Gen. Journal Line";
+        GLEntry: Record "G/L Entry";
+        StartDate: Date;
+        PaymentAmount: Decimal;
+    begin
+        // [FEATURE] [Employee]
+        // [SCENARIO] Payables G/L entry keeps the full FCY amount as Source Currency Amount when posting an FCY employee payment,
+        // instead of a value that has been reconverted through LCY and rounded (bug 639486).
+        Initialize();
+
+        // [GIVEN] Start date "D" as WorkDate.
+        StartDate := WorkDate();
+
+        // [GIVEN] Currency "C" with an exchange rate of 7 FCY = 1 LCY on "D".
+        // [GIVEN] With this rate an FCY amount not divisible by 7 converts to an inexact LCY amount, and back-converting through LCY would round to a slightly different FCY amount.
+        Currency.Get(LibraryERM.CreateCurrencyWithGLAccountSetup());
+        CreateCurrencyExchangeRate(Currency.Code, StartDate, 7, 1);
+
+        // [GIVEN] Employee "E".
+        LibraryHumanResource.CreateEmployee(Employee);
+
+        // [GIVEN] Posted employee Payment via Gen. Journal on "D" with a fixed positive amount 650 in "C".
+        PaymentAmount := 650;
+        CreatePostGenJnlLineWithCurrency(
+            GenJournalLine, GenJournalLine."Document Type"::Payment,
+            GenJournalLine."Account Type"::Employee, Employee."No.",
+            Currency.Code, PaymentAmount, StartDate);
+
+        // [THEN] The payables G/L entry has Source Currency Code equal to "C".
+        EmployeePostingGroup.Get(Employee."Employee Posting Group");
+        GLEntry.SetLoadFields("Document No.", "G/L Account No.", "Source Currency Code", "Source Currency Amount");
+        GLEntry.SetRange("Document No.", GenJournalLine."Document No.");
+        GLEntry.SetRange("G/L Account No.", EmployeePostingGroup."Payables Account");
+        GLEntry.FindFirst();
+        Assert.AreEqual(Currency.Code, GLEntry."Source Currency Code", SourceCurrencyCodeErr);
+
+        // [THEN] Source Currency Amount on payables G/L entry equals the full FCY amount, not a value reconverted through LCY and rounded.
+        Assert.AreEqual(PaymentAmount, GLEntry."Source Currency Amount", PayablesSCYAmountErr);
+    end;
+
     local procedure CreatePurchaseInvoice(var PurchaseHeader: Record "Purchase Header"; VendorNo: Code[20]; GLAccountNo: Code[20]; WithForeignCurrency: Boolean)
     var
         PurchaseLine: Record "Purchase Line";