diff --git a/CompanyManagment.Application/InstitutionContractApplication.cs b/CompanyManagment.Application/InstitutionContractApplication.cs
index 33868672..a36449e3 100644
--- a/CompanyManagment.Application/InstitutionContractApplication.cs
+++ b/CompanyManagment.Application/InstitutionContractApplication.cs
@@ -1291,40 +1291,68 @@ public class InstitutionContractApplication : IInstitutionContractApplication
 		var financialStatement =await _financialStatmentRepository.GetByContractingPartyId(contractingParty.id);
 
 		var dbTransaction = await _institutionContractRepository.BeginTransactionAsync();
-		
-		  var today = DateTime.Today;
-        double invoiceAmount;
-        string invoiceItemDescription;
-        FinancialInvoiceItemType invoiceItemType;
-        long invoiceItemEntityId;
-        if (institutionContract.IsInstallment)
-        {
-	        var firstInstallment = institutionContract.Installments.First();
-	        var firstInstallmentAmount = firstInstallment.Amount;
-            var financialTransaction = new FinancialTransaction(0, today, today.ToFarsi(),
-                "قسط اول سرویس", "debt", "بابت خدمات", firstInstallmentAmount, 0, 0);
+		FinancialInvoice financialInvoice;
+		FinancialInvoiceItem financialInvoiceItem;
+		var today = DateTime.Today;
+		double invoiceAmount = 0;
+		string invoiceItemDescription = string.Empty;
+		FinancialInvoiceItemType invoiceItemType = FinancialInvoiceItemType.BuyInstitutionContract;
+		long invoiceItemEntityId = 0;
 
-            financialStatement.AddFinancialTransaction(financialTransaction);
-            invoiceAmount = firstInstallmentAmount;
-            invoiceItemDescription = $"پرداخت قسط اول قرارداد شماره {institutionContract.ContractNo}";
-            invoiceItemType = FinancialInvoiceItemType.BuyInstitutionContractInstallment;
-            invoiceItemEntityId = firstInstallment.Id;
-        }
-        else
-        {
-            var financialTransaction = new FinancialTransaction(0, today, today.ToFarsi(),
-                "پرداخت کل سرویس", "debt", "بابت خدمات", institutionContract.TotalAmount, 0, 0);
-            financialStatement.AddFinancialTransaction(financialTransaction);
-            invoiceAmount = institutionContract.TotalAmount;
-            invoiceItemDescription = $"پرداخت کل قرارداد شماره {institutionContract.ContractNo}";
-            invoiceItemType = FinancialInvoiceItemType.BuyInstitutionContract;
-            invoiceItemEntityId = institutionContract.id;
-        }
-        var financialInvoice = new FinancialInvoice(invoiceAmount, contractingParty.id, $"خرید قرارداد مالی شماره {institutionContract.ContractNo}");
-        var financialInvoiceItem = new FinancialInvoiceItem(invoiceItemDescription, invoiceAmount, 0,invoiceItemType, invoiceItemEntityId);
-        financialInvoice.AddItem(financialInvoiceItem);
+		if (institutionContract.IsInstallment)
+		{
+			var firstInstallment = institutionContract.Installments.First();
+			var firstInstallmentAmount = firstInstallment.Amount;
+
+			financialInvoice = await _financialInvoiceRepository.GetUnPaidByEntityId(firstInstallment.Id, FinancialInvoiceItemType.BuyInstitutionContractInstallment);
+			if (financialInvoice == null)
+			{
+				var financialTransaction = new FinancialTransaction(0, today, today.ToFarsi(),
+					"قسط اول سرویس", "debt", "بابت خدمات", firstInstallmentAmount, 0, 0);
+				financialStatement.AddFinancialTransaction(financialTransaction);
+				invoiceAmount = firstInstallmentAmount;
+				invoiceItemDescription = $"پرداخت قسط اول قرارداد شماره {institutionContract.ContractNo}";
+				invoiceItemType = FinancialInvoiceItemType.BuyInstitutionContractInstallment;
+				invoiceItemEntityId = firstInstallment.Id;
+			}
+			else
+			{
+				invoiceAmount = financialInvoice.Amount;
+				invoiceItemDescription = financialInvoice.Items.First().Description;
+				invoiceItemType = financialInvoice.Items.First().Type;
+				invoiceItemEntityId = financialInvoice.Items.First().EntityId;
+			}
+		}
+		else
+		{
+			financialInvoice = await _financialInvoiceRepository.GetUnPaidByEntityId(institutionContract.id, FinancialInvoiceItemType.BuyInstitutionContract);
+			if (financialInvoice == null)
+			{
+				var financialTransaction = new FinancialTransaction(0, today, today.ToFarsi(),
+					"پرداخت کل سرویس", "debt", "بابت خدمات", institutionContract.TotalAmount, 0, 0);
+				financialStatement.AddFinancialTransaction(financialTransaction);
+				invoiceAmount = institutionContract.TotalAmount;
+				invoiceItemDescription = $"پرداخت کل قرارداد شماره {institutionContract.ContractNo}";
+				invoiceItemType = FinancialInvoiceItemType.BuyInstitutionContract;
+				invoiceItemEntityId = institutionContract.id;
+			}
+			else
+			{
+				invoiceAmount = financialInvoice.Amount;
+				invoiceItemDescription = financialInvoice.Items.First().Description;
+				invoiceItemType = financialInvoice.Items.First().Type;
+				invoiceItemEntityId = financialInvoice.Items.First().EntityId;
+			}
+		}
+
+		if (financialInvoice == null)
+		{
+			financialInvoice = new FinancialInvoice(invoiceAmount, contractingParty.id, $"خرید قرارداد مالی شماره {institutionContract.ContractNo}");
+			financialInvoiceItem = new FinancialInvoiceItem(invoiceItemDescription, invoiceAmount, 0, invoiceItemType, invoiceItemEntityId);
+			financialInvoice.AddItem(financialInvoiceItem);
+			await _financialInvoiceRepository.CreateAsync(financialInvoice);
+		}
 
-         await _financialInvoiceRepository.CreateAsync(financialInvoice);
 		await _financialInvoiceRepository.SaveChangesAsync();
 
 		var transaction = new PaymentTransaction(institutionContract.ContractingPartyId, invoiceAmount,
@@ -1697,4 +1725,5 @@ public class WorkshopsAndEmployeeViewModel
 	public int ArchiveCode { get; set; }
 }
 
-#endregion
\ No newline at end of file
+#endregion
+