diff --git a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/CSVReportBuilder.java b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/CSVReportBuilder.java
index 6f07fde90..53a3b4243 100644
--- a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/CSVReportBuilder.java
+++ b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/CSVReportBuilder.java
@@ -1,12 +1,13 @@
 package ru.spcex.clearing.reports.builders;
 
-import com.opencsv.CSVWriterBuilder;
+import com.opencsv.CSVWriter;
 import com.opencsv.ICSVWriter;
 import com.opencsv.bean.*;
 import com.opencsv.exceptions.CsvBadConverterException;
 import com.opencsv.exceptions.CsvChainedException;
 import com.opencsv.exceptions.CsvFieldAssignmentException;
 import com.opencsv.exceptions.CsvRequiredFieldEmptyException;
+import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import ru.clearing.classes.statics.data.misc.Session;
@@ -91,23 +92,6 @@ public abstract class CSVReportBuilder<P, R> {
      */
     protected abstract void collect(P params);
 
-    /**
-     * Создает CSVWriter. Если требуется изменить параметры выходного CSV файла, этот метод следует переопределить.
-     *
-     * @param file Файл отчета
-     * @return Созданный CSVWriter
-     * <p>
-     * todo check it
-     */
-    protected ICSVWriter createCsvWriter(File file) throws IOException {
-        Writer writer = new FileWriter(file);
-        CSVWriterBuilder csvWriterBuilder = new CSVWriterBuilder(writer)
-                .withLineEnd("\n")
-                .withSeparator(',')
-                .withQuoteChar('\"');
-        return csvWriterBuilder.build();
-    }
-
     public File createReport(P params, File outFolder) {
         assert outFolder != null && outFolder.isDirectory();
 
@@ -118,10 +102,11 @@ public abstract class CSVReportBuilder<P, R> {
 
         assert rows != null;
 
-        try (Writer writer = new FileWriter(reportFile)) {
+        try (Writer writer = new FileWriter(reportFile);
+             ICSVWriter icsvWriter = new CustomCSVWriter(writer)) {
             CustomStrategy<R> customStrategy = new CustomStrategy<>();
             customStrategy.setType(getReportClass());
-            StatefulBeanToCsv<R> sbc = new StatefulBeanToCsvBuilder<R>(writer)
+            StatefulBeanToCsv<R> sbc = new StatefulBeanToCsvBuilder<R>(icsvWriter)
                     .withMappingStrategy(customStrategy)
                     .withLineEnd("\n")
                     .withSeparator(',')
@@ -160,6 +145,24 @@ public abstract class CSVReportBuilder<P, R> {
         return sessionIds.stream().toList();
     }
 
+    static class CustomCSVWriter extends CSVWriter {
+        public CustomCSVWriter(Writer writer) {
+            super(writer);
+        }
+
+        @Override
+        protected void writeNext(String[] nextLine, boolean applyQuotesToAll, Appendable appendable) throws IOException {
+            if (nextLine != null) {
+                for (int i = 0; i < nextLine.length; i++) {
+                    if (StringUtils.isEmpty(nextLine[i])) {
+                        nextLine[i] = null;
+                    }
+                }
+            }
+            super.writeNext(nextLine, applyQuotesToAll, appendable);
+        }
+    }
+
     static class CustomStrategy<T> extends ColumnPositionMappingStrategy<T> {
         public String[] generateHeader(T bean) throws CsvRequiredFieldEmptyException {
             super.generateHeader(bean);
diff --git a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSCommissionTradesReportBuilder.java b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSCommissionTradesReportBuilder.java
index cbb29529f..8d29bcf51 100644
--- a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSCommissionTradesReportBuilder.java
+++ b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSCommissionTradesReportBuilder.java
@@ -16,7 +16,6 @@ import ru.spcex.platform.imdg.api.predicate.ImdgPredicateBuilder;
 import ru.spcex.platform.imdg.api.predicate.specific.RegistryCodeSqlBuilder;
 import ru.spcex.platform.utils.enumeration.IEnumKey;
 
-import java.math.BigDecimal;
 import java.time.LocalDate;
 import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
@@ -105,8 +104,8 @@ public class KSCommissionTradesReportBuilder extends CSVReportBuilder<EmptyParam
                     continue;
                 }
 
-                String firmId = "";
-                String firmIdInitiator = "";
+                String firmId = null;
+                String firmIdInitiator = null;
                 if (registryUnit == RegistryUnit.X) {
                     firmIdInitiator = registry.getTradingCode();
                 } else if (registryUnit == RegistryUnit.T) {
@@ -122,7 +121,7 @@ public class KSCommissionTradesReportBuilder extends CSVReportBuilder<EmptyParam
                     }
                 }
 
-                String execStatus = "";
+                String execStatus = null;
                 RegistryStatus registryStatus = IEnumKey.getEnumByKey(RegistryStatus.class, registry.getRegistryStatus());
                 if (registryStatus == RegistryStatus.CLRD) execStatus = "Исполнен";
                 else if (registryStatus == RegistryStatus.FAIL) execStatus = "Не исполнен";
@@ -160,7 +159,7 @@ public class KSCommissionTradesReportBuilder extends CSVReportBuilder<EmptyParam
                 ksCommissionTradesReport.setAgreementNumber(agreementNumber);
                 ksCommissionTradesReport.setAgreementNumberPostfix(agreementNumberPostfix);
                 ksCommissionTradesReport.setAgreementDate(registry.getTradingDate());
-                ksCommissionTradesReport.setSum(registry.getBalance() != null ? registry.getBalance().negate() : BigDecimal.ZERO);
+                ksCommissionTradesReport.setSum(registry.getBalance() != null ? registry.getBalance().negate() : null);
                 ksCommissionTradesReport.setRepaymDate(registry.getRefundDate());
                 ksCommissionTradesReport.setExecStatus(execStatus);
                 ksCommissionTradesReport.setAgreementSettlementDate(registry.getValueDate());
diff --git a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashNettoReportBuilder.java b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashNettoReportBuilder.java
index f5d4efb5b..2d7219ba7 100644
--- a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashNettoReportBuilder.java
+++ b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashNettoReportBuilder.java
@@ -111,8 +111,8 @@ public class KSRepCashNettoReportBuilder extends CSVReportBuilder<SessionIdParam
 
                 boolean invalid = false;
                 if (!cmtRegistries.isEmpty() || !lmtRegistries.isEmpty()) {
-                    String sourceTradingCode = "";
-                    String sourceTkr = "";
+                    String sourceTradingCode = null;
+                    String sourceTkr = null;
                     if (!cmtRegistries.isEmpty()) {
                         Registry next = cmtRegistries.iterator().next();
                         sourceTradingCode = next.getTradingCode();
@@ -160,7 +160,7 @@ public class KSRepCashNettoReportBuilder extends CSVReportBuilder<SessionIdParam
                     ksRepCashNettoReport.setSessionDate(LocalDateTime.ofInstant(session.getCreated(), getReportZoneId()));
 
 
-                String account = "";
+                String account = null;
                 AccountType accountType = IEnumKey.getEnumByKey(AccountType.class, registry.getAccountType());
                 if (accountType == AccountType.Clrn) {
                     account = registry.getAccount();
@@ -175,12 +175,10 @@ public class KSRepCashNettoReportBuilder extends CSVReportBuilder<SessionIdParam
                 ksRepCashNettoReport.setTkr(registry.getTradingClearingRegistry());
                 ksRepCashNettoReport.setDate(nowDate);
 
-                BigDecimal cmtBalance = BigDecimal.ZERO;
-                BigDecimal lmtBalance = BigDecimal.ZERO;
-                BigDecimal oblValue = BigDecimal.ZERO;
-                BigDecimal reqValue = BigDecimal.ZERO;
-                boolean withValue = false;
-                boolean withOblReqValue = false;
+                BigDecimal cmtBalance = null;
+                BigDecimal lmtBalance = null;
+                BigDecimal oblValue = null;
+                BigDecimal reqValue = null;
                 Set<SessionType> sessionTypeForValue = Set.of(
                         SessionType.IPOT,
                         SessionType.TRDT,
@@ -198,12 +196,12 @@ public class KSRepCashNettoReportBuilder extends CSVReportBuilder<SessionIdParam
                         SessionType sessionType = IEnumKey.getEnumByKey(SessionType.class, cmtRegistry.getSessionType());
                         if (sessionType == null) continue;
                         if (sessionTypeForValue.contains(sessionType)) {
+                            if (cmtBalance == null) cmtBalance = BigDecimal.ZERO;
                             cmtBalance = cmtBalance.add(cmtRegistry.getBalance());
-                            withValue = true;
                         }
                         if (sessionTypeForOblReqValue.contains(sessionType)) {
+                            if (reqValue == null) reqValue = BigDecimal.ZERO;
                             reqValue = reqValue.add(cmtRegistry.getBalance());
-                            withOblReqValue = true;
                         }
                     }
                 }
@@ -212,18 +210,26 @@ public class KSRepCashNettoReportBuilder extends CSVReportBuilder<SessionIdParam
                         SessionType sessionType = IEnumKey.getEnumByKey(SessionType.class, lmtRegistry.getSessionType());
                         if (sessionType == null) continue;
                         if (sessionTypeForValue.contains(sessionType)) {
+                            if (lmtBalance == null) lmtBalance = BigDecimal.ZERO;
                             lmtBalance = lmtBalance.add(lmtRegistry.getBalance());
-                            withValue = true;
                         }
                         if (sessionTypeForOblReqValue.contains(sessionType)) {
+                            if (oblValue == null) oblValue = BigDecimal.ZERO;
                             oblValue = oblValue.add(lmtRegistry.getBalance());
-                            withOblReqValue = true;
                         }
                     }
                 }
-                ksRepCashNettoReport.setValue(withValue ? cmtBalance.subtract(lmtBalance) : null);
-                ksRepCashNettoReport.setOblValue(withOblReqValue ? oblValue : null);
-                ksRepCashNettoReport.setReqValue(withOblReqValue ? reqValue : null);
+                BigDecimal value;
+                if (cmtBalance != null) {
+                    value = cmtBalance.subtract(Objects.requireNonNullElse(lmtBalance, BigDecimal.ZERO));
+                }
+                else {
+                    if (lmtBalance != null) value = lmtBalance.negate();
+                    else value = null;
+                }
+                ksRepCashNettoReport.setValue(value);
+                ksRepCashNettoReport.setOblValue(oblValue);
+                ksRepCashNettoReport.setReqValue(reqValue);
 
                 rows.add(ksRepCashNettoReport);
             } catch (Throwable e) {
diff --git a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashRegisterSumsReportBuilder.java b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashRegisterSumsReportBuilder.java
index 24eecc494..4598002e9 100644
--- a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashRegisterSumsReportBuilder.java
+++ b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashRegisterSumsReportBuilder.java
@@ -124,7 +124,7 @@ public class KSRepCashRegisterSumsReportBuilder extends CSVReportBuilder<EmptyPa
 
             String firmId = registry.getTradingCode();
             String tkr = registry.getTradingClearingRegistry();
-            String tradeNum = "";
+            String tradeNum = null;
             String registerCode = pairRegistry != null ? pairRegistry.getRegistryCode() : "";
             BigDecimal addSum = registry.getBalance() != null ? registry.getBalance() :BigDecimal.ZERO;
             Instant addTime = registry.getUpdated();
diff --git a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashRegistersReportBuilder.java b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashRegistersReportBuilder.java
index e36b9b08a..93036f779 100644
--- a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashRegistersReportBuilder.java
+++ b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepCashRegistersReportBuilder.java
@@ -100,7 +100,7 @@ public class KSRepCashRegistersReportBuilder extends CSVReportBuilder<EmptyParam
                 }
                 if (!WorkflowStatus.Active.equalsByKey(company.getWorkflowStatus())) continue;
 
-                String account = "";
+                String account = null;
                 AccountType accountType = IEnumKey.getEnumByKey(AccountType.class, registry.getAccountType());
                 if (accountType == AccountType.Clrn) {
                     account = registry.getAccount();
@@ -110,7 +110,8 @@ public class KSRepCashRegistersReportBuilder extends CSVReportBuilder<EmptyParam
                             "accountType", AccountType.Anlt.getKey()
                     ));
                     if (accountFromIMDG != null) account = accountFromIMDG.getAccount();
-                }                KSRepCashRegistersReport ksRepCashRegistersReport = new KSRepCashRegistersReport();
+                }
+                KSRepCashRegistersReport ksRepCashRegistersReport = new KSRepCashRegistersReport();
 
                 ksRepCashRegistersReport.setFirmId(registry.getTradingCode());
                 ksRepCashRegistersReport.setAccount(account);
@@ -121,7 +122,8 @@ public class KSRepCashRegistersReportBuilder extends CSVReportBuilder<EmptyParam
                 BigDecimal openBalance = registry.getOpenBalance() != null ? registry.getOpenBalance() : BigDecimal.ZERO;
                 ksRepCashRegistersReport.setOpenBalance(openBalance);
 
-                ksRepCashRegistersReport.setRemarks("");
+                ksRepCashRegistersReport.setRemarks(null);
+                ksRepCashRegistersReport.setTradeNum(null);
 
                 RegistryCodeDictionary registryCodeDictionary = registryCodeDictionaryImdg.getFirstObjectByFieldValues(Map.of("code", registry.getRegistryCode()));
                 if (registryCodeDictionary != null) ksRepCashRegistersReport.setRegisterName(registryCodeDictionary.getName());
@@ -170,7 +172,9 @@ public class KSRepCashRegistersReportBuilder extends CSVReportBuilder<EmptyParam
                         )
                 );
                 BigDecimal addWithdraw = BigDecimal.ZERO;
-                for (Registry currRegistry : registriesForAddWithdraw) addWithdraw = addWithdraw.add(currRegistry.getBalance());
+                for (Registry currRegistry : registriesForAddWithdraw) {
+                    addWithdraw = addWithdraw.add(currRegistry.getBalance());
+                }
                 ksRepCashRegistersReport.setAddWithdraw(addWithdraw);
 
                 BigDecimal closeBalance = ksRepCashRegistersReport.getOpenBalance()
diff --git a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoNettoReportBuilder.java b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoNettoReportBuilder.java
index caeebe804..7181d0925 100644
--- a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoNettoReportBuilder.java
+++ b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoNettoReportBuilder.java
@@ -90,9 +90,8 @@ public class KSRepDepoNettoReportBuilder extends CSVReportBuilder<SessionIdParam
             List<Registry> groupedRegistry = entry.getValue();
             try {
                 if (groupedRegistry.isEmpty()) {
-                    log.warn("Empty LS_T and CS_T registries for {}. Registries with id = [{}] was skipped",
-                            pairRegistryId,
-                            groupedRegistry.stream().map(r -> String.valueOf(r.getId())).collect(Collectors.joining(", "))
+                    log.warn("Empty LS_T and CS_T registries for {}",
+                            pairRegistryId
                     );
                     continue;
                 }
@@ -110,7 +109,7 @@ public class KSRepDepoNettoReportBuilder extends CSVReportBuilder<SessionIdParam
 
                 boolean invalid = false;
                 if (!cstRegistries.isEmpty() || !lstRegistries.isEmpty()) {
-                    String sourceTradingCode = "";
+                    String sourceTradingCode = null;
                     if (!cstRegistries.isEmpty()) sourceTradingCode = cstRegistries.iterator().next().getTradingCode();
                     if (!lstRegistries.isEmpty()) sourceTradingCode = lstRegistries.iterator().next().getTradingCode();
                     for (Registry currRegistry : cstRegistries) {
diff --git a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoRegisterQuantitiesReportBuilder.java b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoRegisterQuantitiesReportBuilder.java
index dbee9895b..51476a7e4 100644
--- a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoRegisterQuantitiesReportBuilder.java
+++ b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoRegisterQuantitiesReportBuilder.java
@@ -120,10 +120,10 @@ public class KSRepDepoRegisterQuantitiesReportBuilder extends CSVReportBuilder<E
 
             String firmId = registry.getTradingCode();
             String tkr = registry.getTradingClearingRegistry();
-            String tradeNum = "";
+            String tradeNum = null;
             String securityId = registry.getSecuritySymbol();
-            String registerCode = pairRegistry != null ? pairRegistry.getRegistryCode() : "";
-            BigDecimal addQuantity = registry.getBalance() != null ? registry.getBalance() :BigDecimal.ZERO;
+            String registerCode = pairRegistry != null ? pairRegistry.getRegistryCode() : null;
+            BigDecimal addQuantity = registry.getBalance();
             Instant addTime = registry.getUpdated();
             LocalDate addDate = LocalDate.now();
 
diff --git a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoRegistersReportBuilder.java b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoRegistersReportBuilder.java
index 5eaaaa66d..be73c86d4 100644
--- a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoRegistersReportBuilder.java
+++ b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepDepoRegistersReportBuilder.java
@@ -108,10 +108,11 @@ public class KSRepDepoRegistersReportBuilder extends CSVReportBuilder<EmptyParam
                 ksRepDepoRegistersReport.setSecurityId(registry.getSecuritySymbol());
                 ksRepDepoRegistersReport.setRegisterCode(registry.getRegistryCode());
 
-                BigDecimal openBalance = registry.getOpenBalance() != null ? registry.getOpenBalance() : BigDecimal.ZERO;
+                BigDecimal openBalance = registry.getOpenBalance();
                 ksRepDepoRegistersReport.setOpenQuantity(openBalance);
 
                 ksRepDepoRegistersReport.setRemarks(null);
+                ksRepDepoRegistersReport.setTradeNum(null);
 
                 RegistryCodeDictionary registryCodeDescription = registryCodeDictionaryImdg.getFirstObjectByFieldValues(Map.of("code", registry.getRegistryCode()));
                 if (registryCodeDescription != null) ksRepDepoRegistersReport.setRegisterName(registryCodeDescription.getName());
diff --git a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepTradesReportBuilder.java b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepTradesReportBuilder.java
index 0e6cdd2d8..deb9a2ff0 100644
--- a/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepTradesReportBuilder.java
+++ b/clearing-parent/reports-service/src/main/java/ru/spcex/clearing/reports/builders/ks/KSRepTradesReportBuilder.java
@@ -99,7 +99,7 @@ public class KSRepTradesReportBuilder extends CSVReportBuilder<EmptyParams, KSRe
         Map<ExecutionKey, String> statusForExecution = new HashMap<>();
         executions.forEach(execution -> {
             if (Set.of("S", "SELL").contains(execution.getSide())) {
-                String status = "";
+                String status = null;
                 if (execution.getCoverageStatus() != null) {
                     Long groupId = execution.getExchangeExecutionId();
                     String coverageStatus = execution.getCoverageStatus().toUpperCase();
@@ -190,8 +190,8 @@ public class KSRepTradesReportBuilder extends CSVReportBuilder<EmptyParams, KSRe
                     continue;
                 }
 
-                String depoAccount = "";
-                String agreementNumber = "";
+                String depoAccount = null;
+                String agreementNumber = null;
                 if (execution instanceof ExecutionDeposit executionDeposit) {
                     agreementNumber = executionDeposit.getContract();
                     BigDecimal firstLegAmount = executionDeposit.getFirstLegAmount() != null ? executionDeposit.getFirstLegAmount() : BigDecimal.ZERO;
@@ -253,7 +253,6 @@ public class KSRepTradesReportBuilder extends CSVReportBuilder<EmptyParams, KSRe
                                 executionFond.getExchangeExecutionId());
                         continue;
                     }
-                    agreementNumber = null;
 
                     BigDecimal quantity = executionFond.getQuantity() != null ? executionFond.getQuantity() : BigDecimal.ZERO;
                     if (Arrays.asList(Side.SELL.getKey(), "S", "SELL").contains((executionFond.getSide())))