FINERACT-2317: Add support for modifying loan approved amounts with validation and history tracking

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/api/LoansApiResource.java

@@ -127,12 +127,14 @@ import org.apache.fineract.portfolio.loanaccount.data.DisbursementData;
 import org.apache.fineract.portfolio.loanaccount.data.GlimRepaymentTemplate;
 import org.apache.fineract.portfolio.loanaccount.data.LoanAccountData;
 import org.apache.fineract.portfolio.loanaccount.data.LoanApprovalData;
+import org.apache.fineract.portfolio.loanaccount.data.LoanApprovedAmountHistoryData;
 import org.apache.fineract.portfolio.loanaccount.data.LoanChargeData;
 import org.apache.fineract.portfolio.loanaccount.data.LoanCollateralManagementData;
 import org.apache.fineract.portfolio.loanaccount.data.LoanTermVariationsData;
 import org.apache.fineract.portfolio.loanaccount.data.LoanTransactionData;
 import org.apache.fineract.portfolio.loanaccount.data.PaidInAdvanceData;
 import org.apache.fineract.portfolio.loanaccount.data.RepaymentScheduleRelatedLoanData;
+import org.apache.fineract.portfolio.loanaccount.domain.LoanApprovedAmountHistoryRepository;
 import org.apache.fineract.portfolio.loanaccount.domain.LoanBuyDownFeeCalculationType;
 import org.apache.fineract.portfolio.loanaccount.domain.LoanBuyDownFeeIncomeType;
 import org.apache.fineract.portfolio.loanaccount.domain.LoanBuyDownFeeStrategy;
@@ -176,6 +178,8 @@ import org.apache.fineract.portfolio.savings.DepositAccountType;
 import org.apache.fineract.portfolio.savings.domain.SavingsAccountStatusType;
 import org.glassfish.jersey.media.multipart.FormDataContentDisposition;
 import org.glassfish.jersey.media.multipart.FormDataParam;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
 import org.springframework.stereotype.Component;
 import org.springframework.util.CollectionUtils;
 
@@ -303,6 +307,7 @@ public class LoansApiResource {
     private final LoanTermVariationsRepository loanTermVariationsRepository;
     private final LoanSummaryProviderDelegate loanSummaryProviderDelegate;
     private final LoanCapitalizedIncomeBalanceRepository loanCapitalizedIncomeBalanceRepository;
+    private final LoanApprovedAmountHistoryRepository loanApprovedAmountHistoryRepository;
 
     /*
      * This template API is used for loan approval, ideally this should be invoked on loan that are pending for
@@ -872,6 +877,55 @@ public class LoansApiResource {
         return createLoanDelinquencyAction(null, ExternalIdFactory.produce(loanExternalId), apiRequestBodyAsJson);
     }
 
+    @PUT
+    @Path("{loanId}/approved-amount")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    @Operation(summary = "Modifies the approved amount of the loan", description = "")
+    @RequestBody(required = true, content = @Content(schema = @Schema(implementation = LoansApiResourceSwagger.PutLoansApprovedAmountRequest.class)))
+    @ApiResponses({
+            @ApiResponse(responseCode = "200", description = "OK", content = @Content(schema = @Schema(implementation = LoansApiResourceSwagger.PutLoansApprovedAmountResponse.class))) })
+    public CommandProcessingResult modifyLoanApprovedAmount(
+            @PathParam("loanId") @Parameter(description = "loanId", required = true) final Long loanId, @Context final UriInfo uriInfo,
+            @Parameter(hidden = true) final String apiRequestBodyAsJson) {
+        return modifyLoanApprovedAmount(loanId, ExternalId.empty(), apiRequestBodyAsJson);
+    }
+
+    @PUT
+    @Path("external-id/{loanExternalId}/approved-amount")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    @Operation(summary = "Modifies the approved amount of the loan", description = "")
+    @RequestBody(required = true, content = @Content(schema = @Schema(implementation = LoansApiResourceSwagger.PutLoansApprovedAmountRequest.class)))
+    @ApiResponses({
+            @ApiResponse(responseCode = "200", description = "OK", content = @Content(schema = @Schema(implementation = LoansApiResourceSwagger.PutLoansApprovedAmountResponse.class))) })
+    public CommandProcessingResult modifyLoanApprovedAmount(
+            @PathParam("loanExternalId") @Parameter(description = "loanExternalId", required = true) final String loanExternalId,
+            @Context final UriInfo uriInfo, @Parameter(hidden = true) final String apiRequestBodyAsJson) {
+        return modifyLoanApprovedAmount(null, ExternalIdFactory.produce(loanExternalId), apiRequestBodyAsJson);
+    }
+
+    @GET
+    @Path("{loanId}/approved-amount")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    @Operation(summary = "Collects and returns the approved amount modification history for a given loan", description = "")
+    public List<LoanApprovedAmountHistoryData> getLoanApprovedAmountHistory(
+            @PathParam("loanId") @Parameter(description = "loanId", required = true) final Long loanId, @Context final UriInfo uriInfo) {
+        return getLoanApprovedAmountHistory(loanId, ExternalId.empty());
+    }
+
+    @GET
+    @Path("external-id/{loanExternalId}/approved-amount")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    @Operation(summary = "Collects and returns the approved amount modification history for a given loan", description = "")
+    public List<LoanApprovedAmountHistoryData> getLoanApprovedAmountHistory(
+            @PathParam("loanExternalId") @Parameter(description = "loanExternalId", required = true) final String loanExternalId,
+            @Context final UriInfo uriInfo) {
+        return getLoanApprovedAmountHistory(null, ExternalIdFactory.produce(loanExternalId));
+    }
+
     private String retrieveApprovalTemplate(final Long loanId, final String loanExternalIdStr, final String templateType,
             final UriInfo uriInfo) {
         this.context.authenticatedUser().validateHasReadPermission(RESOURCE_NAME_FOR_PERMISSIONS);
@@ -1294,4 +1348,19 @@ public class LoansApiResource {
         return delinquencyActionSerializer.serialize(result);
     }
 
+    private CommandProcessingResult modifyLoanApprovedAmount(Long loanId, ExternalId loanExternalId, String apiRequestBodyAsJson) {
+        Long resolvedLoanId = getResolvedLoanId(loanId, loanExternalId);
+        final CommandWrapperBuilder builder = new CommandWrapperBuilder().withJson(apiRequestBodyAsJson);
+        CommandWrapper commandRequest = builder.updateLoanApprovedAmount(resolvedLoanId).build();
+
+        return this.commandsSourceWritePlatformService.logCommandSource(commandRequest);
+    }
+
+    private List<LoanApprovedAmountHistoryData> getLoanApprovedAmountHistory(Long loanId, ExternalId loanExternalId) {
+        context.authenticatedUser().validateHasReadPermission(RESOURCE_NAME_FOR_PERMISSIONS);
+        Long resolvedLoanId = getResolvedLoanId(loanId, loanExternalId);
+        Pageable sortedByCreationDate = Pageable.unpaged(Sort.by("createdDate").ascending());
+        return loanApprovedAmountHistoryRepository.findAllByLoanId(resolvedLoanId, sortedByCreationDate);
+    }
+
 }

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/api/LoansApiResourceSwagger.java

@@ -1771,4 +1771,47 @@ final class LoansApiResourceSwagger {
         @Schema(description = "PostLoansLoanIdChanges")
         public PostLoansLoanIdChanges changes;
     }
+
+    @Schema(description = "PutLoansApprovedAmountRequest")
+    public static final class PutLoansApprovedAmountRequest {
+
+        private PutLoansApprovedAmountRequest() {}
+
+        @Schema(example = "1000")
+        public BigDecimal amount;
+        @Schema(example = "en")
+        public String locale;
+    }
+
+    @Schema(description = "PutLoansApprovedAmountResponse")
+    public static final class PutLoansApprovedAmountResponse {
+
+        private PutLoansApprovedAmountResponse() {}
+
+        static final class PutLoansApprovedAmountChanges {
+
+            private PutLoansApprovedAmountChanges() {}
+
+            @Schema(example = "1000")
+            public BigDecimal oldApprovedAmount;
+            @Schema(example = "1000")
+            public BigDecimal newApprovedAmount;
+            @Schema(example = "en_GB")
+            public String locale;
+        }
+
+        @Schema(example = "3")
+        public Long resourceId;
+        @Schema(example = "95174ff9-1a75-4d72-a413-6f9b1cb988b7")
+        public String resourceExternalId;
+        @Schema(example = "2")
+        public Long officeId;
+        @Schema(example = "6")
+        public Long clientId;
+        @Schema(example = "10")
+        public Long groupId;
+
+        @Schema(description = "PutLoansApprovedAmountChanges")
+        public PutLoansApprovedAmountChanges changes;
+    }
 }

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/serialization/LoanApplicationValidator.java

@@ -2174,12 +2174,33 @@ public final class LoanApplicationValidator {
 
     public BigDecimal getOverAppliedMax(Loan loan) {
         LoanProduct loanProduct = loan.getLoanProduct();
+
+        // Check if overapplied calculation type and number are properly configured
+        if (loanProduct.getOverAppliedCalculationType() == null || loanProduct.getOverAppliedNumber() == null) {
+            // If overapplied calculation is not configured, return proposed principal (original behavior)
+            return loan.getProposedPrincipal();
+        }
+
+        // For loans with approved amount modifications, use proposed principal as base to allow
+        // disbursement up to the originally requested amount regardless of the reduced approved amount
+        boolean hasApprovedAmountModification = loan.getApprovedPrincipal() != null && loan.getProposedPrincipal() != null
+                && loan.getApprovedPrincipal().compareTo(loan.getProposedPrincipal()) != 0;
+
+        BigDecimal basePrincipal;
+        if (hasApprovedAmountModification) {
+            // Use proposed principal for loans with approved amount modifications
+            basePrincipal = loan.getProposedPrincipal();
+        } else {
+            // Use approved principal for normal loans
+            basePrincipal = loan.getApprovedPrincipal() != null ? loan.getApprovedPrincipal() : loan.getProposedPrincipal();
+        }
+
         if ("percentage".equals(loanProduct.getOverAppliedCalculationType())) {
             BigDecimal overAppliedNumber = BigDecimal.valueOf(loanProduct.getOverAppliedNumber());
             BigDecimal totalPercentage = BigDecimal.valueOf(1).add(overAppliedNumber.divide(BigDecimal.valueOf(100)));
-            return loan.getProposedPrincipal().multiply(totalPercentage);
+            return basePrincipal.multiply(totalPercentage);
         } else {
-            return loan.getProposedPrincipal().add(BigDecimal.valueOf(loanProduct.getOverAppliedNumber()));
+            return basePrincipal.add(BigDecimal.valueOf(loanProduct.getOverAppliedNumber()));
         }
     }
 

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/serialization/LoanApprovedAmountValidatorImpl.java

@@ -0,0 +1,104 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.fineract.portfolio.loanaccount.serialization;
+
+import com.google.gson.JsonElement;
+import com.google.gson.reflect.TypeToken;
+import java.lang.reflect.Type;
+import java.math.BigDecimal;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import lombok.RequiredArgsConstructor;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.fineract.infrastructure.core.api.JsonCommand;
+import org.apache.fineract.infrastructure.core.exception.InvalidJsonException;
+import org.apache.fineract.infrastructure.core.serialization.FromJsonHelper;
+import org.apache.fineract.infrastructure.core.service.MathUtil;
+import org.apache.fineract.portfolio.common.service.Validator;
+import org.apache.fineract.portfolio.loanaccount.api.LoanApiConstants;
+import org.apache.fineract.portfolio.loanaccount.domain.Loan;
+import org.apache.fineract.portfolio.loanaccount.domain.LoanRepository;
+import org.apache.fineract.portfolio.loanaccount.domain.LoanStatus;
+import org.apache.fineract.portfolio.loanaccount.exception.LoanNotFoundException;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public final class LoanApprovedAmountValidatorImpl implements LoanApprovedAmountValidator {
+
+    private static final Set<LoanStatus> INVALID_LOAN_STATUSES_FOR_APPROVED_AMOUNT_MODIFICATION = Set.of(LoanStatus.INVALID,
+            LoanStatus.SUBMITTED_AND_PENDING_APPROVAL, LoanStatus.REJECTED);
+
+    private final FromJsonHelper fromApiJsonHelper;
+    private final LoanRepository loanRepository;
+    private final LoanApplicationValidator loanApplicationValidator;
+
+    @Override
+    public void validateLoanApprovedAmountModification(JsonCommand command) {
+        String json = command.json();
+        if (StringUtils.isBlank(json)) {
+            throw new InvalidJsonException();
+        }
+
+        final Set<String> supportedParameters = new HashSet<>(
+                Arrays.asList(LoanApiConstants.amountParameterName, LoanApiConstants.localeParameterName));
+
+        final JsonElement element = this.fromApiJsonHelper.parse(json);
+        final Type typeOfMap = new TypeToken<Map<String, Object>>() {}.getType();
+        this.fromApiJsonHelper.checkForUnsupportedParameters(typeOfMap, json, supportedParameters);
+
+        final BigDecimal newApprovedAmount = this.fromApiJsonHelper.extractBigDecimalWithLocaleNamed(LoanApiConstants.amountParameterName,
+                element);
+
+        Validator.validateOrThrow("loan.approved.amount", baseDataValidator -> {
+            baseDataValidator.reset().parameter(LoanApiConstants.amountParameterName).value(newApprovedAmount).notNull();
+        });
+
+        Validator.validateOrThrowDomainViolation("loan.approved.amount", baseDataValidator -> {
+            baseDataValidator.reset().parameter(LoanApiConstants.amountParameterName).value(newApprovedAmount).positiveAmount();
+
+            final Long loanId = command.getLoanId();
+            Loan loan = this.loanRepository.findById(loanId).orElseThrow(() -> new LoanNotFoundException(loanId));
+
+            if (INVALID_LOAN_STATUSES_FOR_APPROVED_AMOUNT_MODIFICATION.contains(loan.getStatus())) {
+                baseDataValidator.reset().failWithCodeNoParameterAddedToErrorCode("loan.status.not.valid.for.approved.amount.modification");
+            }
+
+            BigDecimal maximumThresholdForApprovedAmount;
+            if (loan.loanProduct().isAllowApprovedDisbursedAmountsOverApplied()) {
+                maximumThresholdForApprovedAmount = loanApplicationValidator.getOverAppliedMax(loan);
+            } else {
+                maximumThresholdForApprovedAmount = loan.getProposedPrincipal();
+            }
+
+            if (MathUtil.isGreaterThan(newApprovedAmount, maximumThresholdForApprovedAmount)) {
+                baseDataValidator.reset().parameter(LoanApiConstants.amountParameterName)
+                        .failWithCode("can't.be.greater.than.maximum.applied.loan.amount.calculation");
+            }
+
+            BigDecimal totalPrincipalOnLoan = loan.getSummary().getTotalPrincipal();
+            if (MathUtil.isLessThan(newApprovedAmount, totalPrincipalOnLoan)) {
+                baseDataValidator.reset().parameter(LoanApiConstants.amountParameterName)
+                        .failWithCode("less.than.disbursed.principal.and.capitalized.income");
+            }
+        });
+    }
+}

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/serialization/LoanDisbursementValidator.java

@@ -44,7 +44,7 @@ public final class LoanDisbursementValidator {
             } else {
                 if ((totalDisbursed.compareTo(loan.getApprovedPrincipal()) > 0)
                         || (totalDisbursed.add(capitalizedIncome).compareTo(loan.getApprovedPrincipal()) > 0)) {
-                    final String errorMsg = "Loan can't be disbursed,disburse amount is exceeding approved principal ";
+                    final String errorMsg = "Loan can't be disbursed, disburse amount is exceeding approved principal.";
                     throw new LoanDisbursalException(errorMsg, "disburse.amount.must.be.less.than.approved.principal", totalDisbursed,
                             loan.getApprovedPrincipal());
                 }

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/serialization/LoanTransactionValidatorImpl.java

@@ -158,7 +158,7 @@ public final class LoanTransactionValidatorImpl implements LoanTransactionValida
             validateLoanClientIsActive(loan);
             validateLoanGroupIsActive(loan);
 
-            final BigDecimal disbursedAmount = loan.getDisbursedAmount();
+            final BigDecimal disbursedAmount = loan.getSummary().getTotalPrincipalDisbursed();
             loanDisbursementValidator.compareDisbursedToApprovedOrProposedPrincipal(loan, principal, disbursedAmount);
 
             if (loan.isChargedOff()) {

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/service/LoanDisbursementService.java

@@ -161,6 +161,7 @@ public class LoanDisbursementService {
             } else {
                 loan.getLoanRepaymentScheduleDetail()
                         .setPrincipal(loan.getLoanRepaymentScheduleDetail().getPrincipal().minus(diff).getAmount());
+                totalAmount = loan.getLoanRepaymentScheduleDetail().getPrincipal().getAmount();
             }
             loanDisbursementValidator.compareDisbursedToApprovedOrProposedPrincipal(loan, disburseAmount.getAmount(), totalAmount);
         }

fineract-provider/src/main/java/org/apache/fineract/portfolio/loanaccount/starter/LoanAccountConfiguration.java

@@ -432,7 +432,7 @@ public class LoanAccountConfiguration {
             LoanJournalEntryPoster journalEntryPoster, LoanAdjustmentService loanAdjustmentService,
             LoanAccountingBridgeMapper loanAccountingBridgeMapper, LoanMapper loanMapper,
             LoanTransactionProcessingService loanTransactionProcessingService, final LoanBalanceService loanBalanceService,
-            LoanTransactionService loanTransactionService, BuyDownFeePlatformService buyDownFeePlatformService) {
+            LoanTransactionService loanTransactionService) {
         return new LoanWritePlatformServiceJpaRepositoryImpl(context, loanTransactionValidator, loanUpdateCommandFromApiJsonDeserializer,
                 loanRepositoryWrapper, loanAccountDomainService, noteRepository, loanTransactionRepository,
                 loanTransactionRelationRepository, loanAssembler, journalEntryWritePlatformService, calendarInstanceRepository,

fineract-provider/src/main/resources/db/changelog/tenant/changelog-tenant.xml

@@ -209,4 +209,6 @@
     <include file="parts/0188_create_loan_buy_down_fee_balance.xml" relativeToChangelogFile="true" />
     <include file="parts/0189_add_loan_buydown_fee_event.xml" relativeToChangelogFile="true" />
     <include file="parts/0190_buy_down_fee_amortization.xml" relativeToChangelogFile="true" />
+    <include file="parts/0191_add_LoanApprovedAmountChangedBusinessEvent.xml" relativeToChangelogFile="true" />
+    <include file="parts/0192_create_loan_approved_amount_history.xml" relativeToChangelogFile="true" />
 </databaseChangeLog>

fineract-provider/src/main/resources/db/changelog/tenant/parts/0191_add_LoanApprovedAmountChangedBusinessEvent.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements. See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership. The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License. You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied. See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+-->
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-4.1.xsd">
+    <changeSet id="1" author="fineract">
+        <insert tableName="m_external_event_configuration">
+            <column name="type" value="LoanApprovedAmountChangedBusinessEvent"/>
+            <column name="enabled" valueBoolean="false"/>
+        </insert>
+    </changeSet>
+</databaseChangeLog>

fineract-provider/src/main/resources/db/changelog/tenant/parts/0192_create_loan_approved_amount_history.xml

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements. See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership. The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License. You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied. See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+-->
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-4.3.xsd">
+    <changeSet author="fineract" id="1" context="postgresql">
+        <createTable tableName="m_loan_approved_amount_history">
+            <column autoIncrement="true" name="id" type="BIGINT">
+                <constraints nullable="false" primaryKey="true" primaryKeyName="pk_m_loan_approved_amount_history"/>
+            </column>
+            <column name="loan_id" type="BIGINT">
+                <constraints nullable="false"/>
+            </column>
+            <column name="new_approved_amount" type="DECIMAL(19, 6)">
+                <constraints nullable="false"/>
+            </column>
+            <column name="old_approved_amount" type="DECIMAL(19, 6)">
+                <constraints nullable="false"/>
+            </column>
+            <column name="created_by" type="BIGINT"/>
+            <column name="created_on_utc" type="timestamp with time zone"/>
+            <column name="last_modified_by" type="BIGINT"/>
+            <column name="last_modified_on_utc" type="timestamp with time zone"/>
+        </createTable>
+    </changeSet>
+    <changeSet author="fineract" id="2" context="mysql">
+        <createTable tableName="m_loan_approved_amount_history">
+            <column autoIncrement="true" name="id" type="BIGINT">
+                <constraints nullable="false" primaryKey="true" primaryKeyName="pk_m_loan_approved_amount_history"/>
+            </column>
+            <column name="loan_id" type="BIGINT">
+                <constraints nullable="false"/>
+            </column>
+            <column name="new_approved_amount" type="DECIMAL(19, 6)">
+                <constraints nullable="false"/>
+            </column>
+            <column name="old_approved_amount" type="DECIMAL(19, 6)">
+                <constraints nullable="false"/>
+            </column>
+            <column name="created_by" type="BIGINT"/>
+            <column name="created_on_utc" type="DATETIME"/>
+            <column name="last_modified_by" type="BIGINT"/>
+            <column name="last_modified_on_utc" type="DATETIME"/>
+        </createTable>
+    </changeSet>
+    <changeSet author="fineract" id="3">
+        <addForeignKeyConstraint baseColumnNames="created_by" baseTableName="m_loan_approved_amount_history"
+                                 constraintName="FK_loan_approved_amount_history_created_by" deferrable="false" initiallyDeferred="false"
+                                 onDelete="RESTRICT" onUpdate="RESTRICT" referencedColumnNames="id"
+                                 referencedTableName="m_appuser" validate="true"/>
+        <addForeignKeyConstraint baseColumnNames="last_modified_by" baseTableName="m_loan_approved_amount_history"
+                                 constraintName="FK_loan_approved_amount_history_last_modified_by" deferrable="false" initiallyDeferred="false"
+                                 onDelete="RESTRICT" onUpdate="RESTRICT" referencedColumnNames="id"
+                                 referencedTableName="m_appuser" validate="true"/>
+        <addForeignKeyConstraint baseColumnNames="loan_id" baseTableName="m_loan_approved_amount_history"
+                                 constraintName="FK_loan_approved_amount_history_loan_id" deferrable="false" initiallyDeferred="false"
+                                 onDelete="RESTRICT" onUpdate="RESTRICT" referencedColumnNames="id"
+                                 referencedTableName="m_loan" validate="true"/>
+    </changeSet>
+</databaseChangeLog>

fineract-provider/src/test/java/org/apache/fineract/infrastructure/event/external/service/ExternalEventConfigurationValidationServiceTest.java

@@ -112,7 +112,7 @@ public class ExternalEventConfigurationValidationServiceTest {
                 "LoanCapitalizedIncomeTransactionCreatedBusinessEvent", "LoanUndoContractTerminationBusinessEvent",
                 "LoanBuyDownFeeTransactionCreatedBusinessEvent", "LoanBuyDownFeeAdjustmentTransactionCreatedBusinessEvent",
                 "LoanBuyDownFeeAmortizationTransactionCreatedBusinessEvent",
-                "LoanBuyDownFeeAmortizationAdjustmentTransactionCreatedBusinessEvent");
+                "LoanBuyDownFeeAmortizationAdjustmentTransactionCreatedBusinessEvent", "LoanApprovedAmountChangedBusinessEvent");
 
         List<FineractPlatformTenant> tenants = Arrays
                 .asList(new FineractPlatformTenant(1L, "default", "Default Tenant", "Europe/Budapest", null));
@@ -206,7 +206,7 @@ public class ExternalEventConfigurationValidationServiceTest {
                 "LoanCapitalizedIncomeTransactionCreatedBusinessEvent", "LoanUndoContractTerminationBusinessEvent",
                 "LoanBuyDownFeeTransactionCreatedBusinessEvent", "LoanBuyDownFeeAdjustmentTransactionCreatedBusinessEvent",
                 "LoanBuyDownFeeAmortizationTransactionCreatedBusinessEvent",
-                "LoanBuyDownFeeAmortizationAdjustmentTransactionCreatedBusinessEvent");
+                "LoanBuyDownFeeAmortizationAdjustmentTransactionCreatedBusinessEvent", "LoanApprovedAmountChangedBusinessEvent");
 
         List<FineractPlatformTenant> tenants = Arrays
                 .asList(new FineractPlatformTenant(1L, "default", "Default Tenant", "Europe/Budapest", null));