diff --git a/Hcs.Client/Client/Api/Payload/HouseManagement/ImportSupplyResourceContractDataPayload.cs b/Hcs.Client/Client/Api/Payload/HouseManagement/ImportSupplyResourceContractDataPayload.cs
index aefb1e1..b023e5b 100644
--- a/Hcs.Client/Client/Api/Payload/HouseManagement/ImportSupplyResourceContractDataPayload.cs
+++ b/Hcs.Client/Client/Api/Payload/HouseManagement/ImportSupplyResourceContractDataPayload.cs
@@ -156,7 +156,7 @@ namespace Hcs.Client.Api.Payload.HouseManagement
 
         /// <summary>
         /// Условное. Срок внесения платы, не позднее. Является обязательным, если вторая сторона договора
-        /// отличается от "Управляющая организация" И договор не является публичным И/ИЛИ присутствует
+        /// отличается от "Управляющая организация" И договор не является публичным и/или присутствует
         /// заключенный на бумажном носителе или в электронной форме И в поле
         /// <see cref="oneTimePayment"/> = false. Не заполняется, если <see cref="oneTimePayment"/> = true.
         /// </summary>
diff --git a/Hcs.Client/Client/Api/Request/HouseManagement/ImportSupplyResourceContractDataRequest.cs b/Hcs.Client/Client/Api/Request/HouseManagement/ImportSupplyResourceContractDataRequest.cs
index e1f1e4b..0d7e6a5 100644
--- a/Hcs.Client/Client/Api/Request/HouseManagement/ImportSupplyResourceContractDataRequest.cs
+++ b/Hcs.Client/Client/Api/Request/HouseManagement/ImportSupplyResourceContractDataRequest.cs
@@ -16,6 +16,8 @@ namespace Hcs.Client.Api.Request.HouseManagement
 
         internal async Task<getStateResultImportResultCommonResultImportSupplyResourceContract> ExecuteAsync(ImportSupplyResourceContractDataPayload payload, CancellationToken token)
         {
+            ThrowIfPayloadIncorrect(payload);
+
             var contract = new importSupplyResourceContractRequestContract
             {
                 TransportGUID = Guid.NewGuid().ToString(),
@@ -57,6 +59,117 @@ namespace Hcs.Client.Api.Request.HouseManagement
             return null;
         }
 
+        private void ThrowIfPayloadIncorrect(ImportSupplyResourceContractDataPayload payload)
+        {
+            if (string.IsNullOrEmpty(payload.contractNumber))
+            {
+                throw new ArgumentException($"{nameof(payload.contractNumber)} is empty");
+            }
+
+            if (payload.signingDate.Equals(default) || payload.effectiveDate.Equals(default))
+            {
+                throw new ArgumentException($"{nameof(payload.signingDate)} OR/AND {nameof(payload.effectiveDate)} are default");
+            }
+
+            if (!payload.comptetionDate.HasValue && payload.automaticRollOverOneYear.HasValue)
+            {
+                throw new ArgumentException($"{nameof(payload.comptetionDate)} is null but {nameof(payload.automaticRollOverOneYear)} has value");
+            }
+
+            if (payload.period == null && (payload.volumeDepends.HasValue && payload.volumeDepends.Value
+                || payload.meteringDeviceInformation.HasValue && payload.meteringDeviceInformation.Value))
+            {
+                throw new ArgumentException($"{nameof(payload.period)} is null but {nameof(payload.volumeDepends)} OR/AND {nameof(payload.meteringDeviceInformation)} have value");
+            }
+
+            if (payload.indicationsAnyDay.HasValue && payload.period == null)
+            {
+                throw new ArgumentException($"{nameof(payload.indicationsAnyDay)} has value but {nameof(payload.period)} is null");
+            }
+
+            // TODO: Add counterparty check
+
+            if (payload.plannedVolumeType.HasValue && !payload.isPlannedVolume)
+            {
+                throw new ArgumentException($"{nameof(payload.plannedVolumeType)} has value but {nameof(payload.isPlannedVolume)} is false");
+            }
+
+            if (payload.contractSubject == null || payload.contractSubject.Length == 0)
+            {
+                throw new ArgumentException($"{nameof(payload.contractSubject)} is empty");
+            }
+
+            if (payload.contractSubject != null && payload.contractSubject.Length > 100)
+            {
+                throw new ArgumentException($"{nameof(payload.contractSubject)} exceeds its limit ({payload.contractSubject.Length} of 100)");
+            }
+
+            if (payload.countingResource.HasValue && (!payload.accrualProcedure.HasValue ||
+                payload.accrualProcedure.Value == SupplyResourceContractTypeAccrualProcedure.O))
+            {
+                throw new ArgumentException($"{nameof(payload.countingResource)} has value but {nameof(payload.accrualProcedure)} is null OR has inappropriate value");
+            }
+
+            // TODO: Add noConnectionToWaterSupply check
+
+            if (payload.objectAddress == null || payload.objectAddress.Length == 0)
+            {
+                throw new ArgumentException($"{nameof(payload.objectAddress)} is empty");
+            }
+
+            // TODO: Add quality check
+            // TODO: Add otherQualityIndicator check
+            // TODO: Add temperatureChart check
+
+            if (payload.billingDate == null && (payload.counterparty is not SupplyResourceContractTypeOrganization ||
+                payload.meteringDeviceInformation.HasValue))
+            {
+                throw new ArgumentException($"{nameof(payload.billingDate)} is null but {nameof(payload.meteringDeviceInformation)} has value");
+            }
+
+            if (payload.billingDate != null && payload.oneTimePayment.HasValue && payload.oneTimePayment.Value)
+            {
+                throw new ArgumentException($"{nameof(payload.billingDate)} has value but {nameof(payload.oneTimePayment)} is true");
+            }
+
+            if (payload.paymentDate == null && payload.counterparty is not SupplyResourceContractTypeOrganization &&
+                payload.isContract && payload.oneTimePayment.HasValue && !payload.oneTimePayment.Value)
+            {
+                throw new ArgumentException($"{nameof(payload.paymentDate)} is null but should have value");
+            }
+
+            if (payload.paymentDate != null && payload.oneTimePayment.HasValue && payload.oneTimePayment.Value)
+            {
+                throw new ArgumentException($"{nameof(payload.paymentDate)} has value but {nameof(payload.oneTimePayment)} is true");
+            }
+
+            if (payload.providingInformationDate == null && payload.counterparty is SupplyResourceContractTypeOrganization &&
+                payload.countingResource.HasValue && payload.countingResource.Value == SupplyResourceContractTypeCountingResource.R &&
+                payload.isContract)
+            {
+                throw new ArgumentException($"{nameof(payload.providingInformationDate)} is null but should have value");
+            }
+
+            if (!payload.meteringDeviceInformation.HasValue &&
+                payload.countingResource.HasValue && payload.countingResource == SupplyResourceContractTypeCountingResource.R)
+            {
+                throw new ArgumentException($"{nameof(payload.meteringDeviceInformation)} is null but should have value");
+            }
+
+            if (payload.volumeDepends.HasValue && (payload.counterparty is SupplyResourceContractTypeOrganization ||
+                payload.oneTimePayment.HasValue && payload.oneTimePayment.Value))
+            {
+                throw new ArgumentException($"{nameof(payload.volumeDepends)} has value but should have not one");
+            }
+
+            if (payload.oneTimePayment.HasValue && payload.counterparty is SupplyResourceContractTypeOrganization)
+            {
+                throw new ArgumentException($"{nameof(payload.oneTimePayment)} has value but {nameof(payload.counterparty)} has inappropriate value");
+            }
+
+            // TODO: Add accrualProcedure check
+        }
+
         private SupplyResourceContractType GetContractFromPayload(ImportSupplyResourceContractDataPayload payload)
         {
             var contract = new SupplyResourceContractType();
@@ -94,11 +207,6 @@ namespace Hcs.Client.Api.Request.HouseManagement
                 items.Add(payload.automaticRollOverOneYear.Value);
                 itemsElementName.Add(ItemsChoiceType9.AutomaticRollOverOneYear);
 
-                if (!payload.comptetionDate.HasValue)
-                {
-                    throw new InvalidOperationException("comptetionDate is empty");
-                }
-
                 items.Add(payload.comptetionDate.Value);
                 itemsElementName.Add(ItemsChoiceType9.ComptetionDate);
             }