diff --git a/src/request-management/dto/run-inquiries-v3.dto.ts b/src/request-management/dto/run-inquiries-v3.dto.ts
index 42d1a00..b165b37 100644
--- a/src/request-management/dto/run-inquiries-v3.dto.ts
+++ b/src/request-management/dto/run-inquiries-v3.dto.ts
@@ -4,6 +4,7 @@ import {
   IsNotEmpty,
   IsOptional,
   IsString,
+  MaxLength,
   ValidateNested,
 } from "class-validator";
 import { Type } from "class-transformer";
@@ -89,3 +90,66 @@ export class RunInquiriesV3Dto {
   @IsString()
   insurerLicense?: string;
 }
+
+/**
+ * Body for `POST run-inquiries-vin/:requestId`.
+ * Identical to RunInquiriesV3Dto but uses `vin` (17-char chassis number) instead of `plate`.
+ * First call = guilty party (+ auto claim). Second call = damaged party (THIRD_PARTY only).
+ */
+export class RunInquiriesVinV3Dto {
+  @ApiProperty({
+    example: "NAAM01E15HK123456",
+    description: "17-character VIN / chassis number (شماره شاسی)",
+    maxLength: 17,
+  })
+  @IsString()
+  @IsNotEmpty()
+  @MaxLength(17)
+  vin: string;
+
+  @ApiProperty({ example: "1234567890", description: "National code of the policyholder (insurer)" })
+  @IsString()
+  @IsNotEmpty()
+  nationalCodeOfInsurer: string;
+
+  @ApiProperty({ example: "1234567890", description: "National code of the driver" })
+  @IsString()
+  @IsNotEmpty()
+  nationalCodeOfDriver: string;
+
+  @ApiProperty({ example: true, description: "Whether the driver is the same person as the insurer" })
+  @IsBoolean()
+  driverIsInsurer: boolean;
+
+  @ApiProperty({ example: 13780624, description: "Insurer birth date (Jalali)" })
+  insurerBirthday: number | string;
+
+  @ApiPropertyOptional({ example: 13780624, description: "Driver birth date (Jalali). Required when driverIsInsurer is false." })
+  @IsOptional()
+  driverBirthday?: number | string | null;
+
+  @ApiPropertyOptional({
+    example: "IR123456789012345678901234",
+    description:
+      "Sheba (IBAN). Required on the damaged party call (CAR_BODY first call; THIRD_PARTY second call).",
+  })
+  @IsOptional()
+  @IsString()
+  sheba?: string;
+
+  @ApiPropertyOptional({
+    example: "123456789",
+    description: "Driver license (required when driverIsInsurer is false).",
+  })
+  @IsOptional()
+  @IsString()
+  driverLicense?: string;
+
+  @ApiPropertyOptional({
+    example: "123456789",
+    description: "Insurer license (required when driverIsInsurer is true).",
+  })
+  @IsOptional()
+  @IsString()
+  insurerLicense?: string;
+}
diff --git a/src/request-management/expert-initiated-blame-v3.mirror.controller.ts b/src/request-management/expert-initiated-blame-v3.mirror.controller.ts
index c4d7728..59cf0c4 100644
--- a/src/request-management/expert-initiated-blame-v3.mirror.controller.ts
+++ b/src/request-management/expert-initiated-blame-v3.mirror.controller.ts
@@ -31,7 +31,7 @@ import { RoleEnum } from "src/Types&Enums/role.enum";
 import { CreationMethod } from "./entities/schema/request-management.schema";
 import { CreateExpertInitiatedFileDto } from "./dto/expert-initiated.dto";
 import { SendPartyOtpDto, VerifyPartyOtpDto } from "./dto/party-otp.dto";
-import { RunInquiriesV3Dto } from "./dto/run-inquiries-v3.dto";
+import { RunInquiriesV3Dto, RunInquiriesVinV3Dto } from "./dto/run-inquiries-v3.dto";
 import {
   CarBodyFormDto,
   DescriptionDto,
@@ -181,6 +181,23 @@ export class ExpertInitiatedBlameV3MirrorController {
     return this.requestManagementService.runInquiriesV3(requestId, expert, dto);
   }
 
+  @Post("run-inquiries-vin/:requestId")
+  @ApiParam({ name: "requestId" })
+  @ApiBody({ type: RunInquiriesVinV3Dto })
+  @ApiOperation({
+    summary: "Run VIN/chassis inquiries for the current party (V3)",
+    description:
+      "VIN alternative to run-inquiries. Uses ESG chassis lookup instead of plate-based inquiry. " +
+      "1st call = guilty party (+ auto claim). 2nd call = damaged party (THIRD_PARTY, after guilty sign).",
+  })
+  async runInquiriesVin(
+    @CurrentUser() expert: any,
+    @Param("requestId") requestId: string,
+    @Body() dto: RunInquiriesVinV3Dto,
+  ) {
+    return this.requestManagementService.runInquiriesVinV3(requestId, expert, dto);
+  }
+
   @Post("add-detail-location/:requestId")
   @ApiParam({ name: "requestId" })
   @ApiBody({ type: LocationDto })
diff --git a/src/request-management/expert-initiated-blame.mirror.controller.ts b/src/request-management/expert-initiated-blame.mirror.controller.ts
index c1e70b2..9b95886 100644
--- a/src/request-management/expert-initiated-blame.mirror.controller.ts
+++ b/src/request-management/expert-initiated-blame.mirror.controller.ts
@@ -27,6 +27,7 @@ import { MediaPolicyService } from "src/media-policy/media-policy.service";
 import { DEFAULT_MEDIA_MAX_BYTES } from "src/client/client.service";
 import { RoleEnum } from "src/Types&Enums/role.enum";
 import { AddPlateDto } from "src/profile/dto/user/AddPlateDto";
+import { InitialFormVinDto } from "./dto/create-request-management.dto";
 import {
   BlameConfessionDtoV2,
   CarBodyFormDto,
@@ -181,6 +182,29 @@ export class ExpertInitiatedBlameMirrorController {
     );
   }
 
+  @Post("/run-inquiries-vin/:requestId")
+  @ApiParam({ name: "requestId" })
+  @ApiBody({ type: InitialFormVinDto })
+  @ApiOperation({
+    summary: "[Expert mirror] Initial form via VIN/chassis inquiry for current party",
+    description:
+      "VIN alternative to run-inquiries. Uses ESG chassis lookup instead of plate-based inquiry. " +
+      "Fills the FIRST or SECOND party insurance/vehicle data depending on the current workflow step.",
+  })
+  async initialFormVin(
+    @Param("requestId") requestId: string,
+    @Body() body: InitialFormVinDto,
+    @CurrentUser() expert: any,
+    @Body("partyRole") partyRole?: string,
+  ) {
+    return this.requestManagementService.initialFormVinV2(
+      requestId,
+      body,
+      expert,
+      partyRole,
+    );
+  }
+
   @ApiBody({
     schema: {
       type: "object",
diff --git a/src/request-management/file-maker-blame-v4.controller.ts b/src/request-management/file-maker-blame-v4.controller.ts
index 856881d..d3b7fa7 100644
--- a/src/request-management/file-maker-blame-v4.controller.ts
+++ b/src/request-management/file-maker-blame-v4.controller.ts
@@ -30,7 +30,7 @@ import { RoleEnum } from "src/Types&Enums/role.enum";
 import { CreationMethod } from "./entities/schema/request-management.schema";
 import { CreateExpertInitiatedFileDto } from "./dto/expert-initiated.dto";
 import { SendPartyOtpDto, VerifyPartyOtpDto } from "./dto/party-otp.dto";
-import { RunInquiriesV3Dto } from "./dto/run-inquiries-v3.dto";
+import { RunInquiriesV3Dto, RunInquiriesVinV3Dto } from "./dto/run-inquiries-v3.dto";
 import {
   CarBodyFormDto,
   DescriptionDto,
@@ -193,6 +193,27 @@ export class FileMakerBlameV4Controller {
     );
   }
 
+  @Post("run-inquiries-vin/:requestId")
+  @ApiParam({ name: "requestId" })
+  @ApiBody({ type: RunInquiriesVinV3Dto })
+  @ApiOperation({
+    summary: "Run VIN/chassis inquiries for the current party (V4)",
+    description:
+      "VIN alternative to run-inquiries. Uses ESG chassis lookup instead of plate-based inquiry. " +
+      "1st call = guilty party (+ auto claim). 2nd call = damaged party (THIRD_PARTY, after guilty sign).",
+  })
+  async runInquiriesVin(
+    @CurrentUser() fileMaker: any,
+    @Param("requestId") requestId: string,
+    @Body() dto: RunInquiriesVinV3Dto,
+  ) {
+    return this.requestManagementService.runInquiriesVinV3(
+      requestId,
+      fileMaker,
+      dto,
+    );
+  }
+
   // ─── Party details ────────────────────────────────────────────────────────────
 
   @Post("add-detail-location/:requestId")
diff --git a/src/request-management/file-maker-blame-v5.controller.ts b/src/request-management/file-maker-blame-v5.controller.ts
index 3dffb2a..fcad7b4 100644
--- a/src/request-management/file-maker-blame-v5.controller.ts
+++ b/src/request-management/file-maker-blame-v5.controller.ts
@@ -30,7 +30,7 @@ import { RoleEnum } from "src/Types&Enums/role.enum";
 import { CreationMethod } from "./entities/schema/request-management.schema";
 import { CreateExpertInitiatedFileDto } from "./dto/expert-initiated.dto";
 import { SendPartyOtpDto, VerifyPartyOtpDto } from "./dto/party-otp.dto";
-import { RunInquiriesV3Dto } from "./dto/run-inquiries-v3.dto";
+import { RunInquiriesV3Dto, RunInquiriesVinV3Dto } from "./dto/run-inquiries-v3.dto";
 import {
   CarBodyFormDto,
   DescriptionDto,
@@ -192,6 +192,27 @@ export class FileMakerBlameV5Controller {
     );
   }
 
+  @Post("run-inquiries-vin/:requestId")
+  @ApiParam({ name: "requestId" })
+  @ApiBody({ type: RunInquiriesVinV3Dto })
+  @ApiOperation({
+    summary: "Run VIN/chassis inquiries for the current party (V5)",
+    description:
+      "VIN alternative to run-inquiries. Uses ESG chassis lookup instead of plate-based inquiry. " +
+      "1st call = guilty party (+ auto claim). 2nd call = damaged party (THIRD_PARTY, after guilty sign).",
+  })
+  async runInquiriesVin(
+    @CurrentUser() fileMaker: any,
+    @Param("requestId") requestId: string,
+    @Body() dto: RunInquiriesVinV3Dto,
+  ) {
+    return this.requestManagementService.runInquiriesVinV3(
+      requestId,
+      fileMaker,
+      dto,
+    );
+  }
+
   // ─── Party details ────────────────────────────────────────────────────────────
 
   @Post("add-detail-location/:requestId")
diff --git a/src/request-management/registrar-blame.mirror.controller.ts b/src/request-management/registrar-blame.mirror.controller.ts
index f6a3150..02b7a4b 100644
--- a/src/request-management/registrar-blame.mirror.controller.ts
+++ b/src/request-management/registrar-blame.mirror.controller.ts
@@ -28,6 +28,7 @@ import { MediaPolicyService } from "src/media-policy/media-policy.service";
 import { DEFAULT_MEDIA_MAX_BYTES } from "src/client/client.service";
 import { RoleEnum } from "src/Types&Enums/role.enum";
 import { AddPlateDto } from "src/profile/dto/user/AddPlateDto";
+import { InitialFormVinDto } from "./dto/create-request-management.dto";
 import {
   CarBodyFormDto,
   DescriptionDto,
@@ -165,6 +166,29 @@ export class RegistrarBlameMirrorController {
     );
   }
 
+  @Post("/initial-form-vin/:requestId")
+  @ApiParam({ name: "requestId" })
+  @ApiBody({ type: InitialFormVinDto })
+  @ApiOperation({
+    summary: "[Registrar mirror] Initial form via VIN/chassis inquiry for current party",
+    description:
+      "VIN alternative to initial-form. Uses ESG chassis lookup instead of plate-based inquiry. " +
+      "Fills the FIRST or SECOND party insurance/vehicle data depending on the current workflow step.",
+  })
+  async initialFormVin(
+    @Param("requestId") requestId: string,
+    @Body() body: InitialFormVinDto,
+    @CurrentUser() registrar: any,
+    @Body("partyRole") partyRole?: string,
+  ) {
+    return this.requestManagementService.initialFormVinV2(
+      requestId,
+      body,
+      registrar,
+      partyRole,
+    );
+  }
+
   @ApiBody({
     schema: {
       type: "object",
diff --git a/src/request-management/request-management.service.ts b/src/request-management/request-management.service.ts
index 734f8c5..1cb1637 100644
--- a/src/request-management/request-management.service.ts
+++ b/src/request-management/request-management.service.ts
@@ -42,7 +42,7 @@ import { ClaimStatus } from "src/Types&Enums/claim-request-management/claimStatu
 import { ClaimWorkflowStep } from "src/Types&Enums/claim-request-management/claim-workflow-steps.enum";
 import { resolveClaimOwnerFieldsFromBlame } from "src/helpers/blame-damaged-party";
 import { ExpertAccidentFieldsDto } from "./dto/expert-accident-fields.dto";
-import { RunInquiriesV3Dto } from "./dto/run-inquiries-v3.dto";
+import { RunInquiriesV3Dto, RunInquiriesVinV3Dto } from "./dto/run-inquiries-v3.dto";
 import { SandHubService } from "src/sand-hub/sand-hub.service";
 import { ReqBlameStatus } from "src/Types&Enums/blame-request-management/status.enum";
 import { StepsEnum } from "src/Types&Enums/blame-request-management/steps.enum";
@@ -9153,6 +9153,399 @@ export class RequestManagementService {
     };
   }
 
+  /**
+   * VIN variant of `runInquiriesV3`.
+   * Identical flow, but calls `getPolicyByChassisInquiry` instead of
+   * `getTejaratBlockInquiry` for the primary policy lookup.
+   */
+  async runInquiriesVinV3(
+    requestId: string,
+    actor: any,
+    dto: RunInquiriesVinV3Dto,
+  ): Promise<{
+    blameRequestId: string;
+    partyRole: PartyRole;
+    claimRequestId?: string;
+    claimPublicId?: string;
+    message: string;
+  }> {
+    const req = await this.blameRequestDbService.findById(requestId);
+    if (!req) throw new NotFoundException("Blame request not found");
+    this.assertBlameV3ExpertInPerson(req);
+    await this.verifyExpertAccessForBlameV2(req, actor);
+
+    const partyRole = this.resolveV3InquiryPartyRole(req);
+    if (!partyRole) {
+      throw new ConflictException("All party inquiries are already complete.");
+    }
+
+    if (partyRole === PartyRole.FIRST) {
+      const firstIdx = this.getPartyIndex(req, PartyRole.FIRST);
+      if (firstIdx === -1)
+        throw new BadRequestException("First party not found");
+      const firstParty = req.parties[firstIdx];
+      if (!firstParty?.person?.userId) {
+        throw new BadRequestException(
+          "Guilty party OTP must be verified before running inquiries.",
+        );
+      }
+      if (req.type === BlameRequestType.CAR_BODY) {
+        const form = firstParty.carBodyFirstForm as any;
+        if (form?.car == null && form?.object == null) {
+          throw new BadRequestException(
+            "Submit car-body-form before running inquiries (CAR_BODY).",
+          );
+        }
+      }
+
+      await this.runPartyInquiriesVinV3Internal(
+        req,
+        dto,
+        PartyRole.FIRST,
+        firstParty,
+      );
+      if (req.type === BlameRequestType.CAR_BODY) {
+        await this.validateShebaV3(
+          dto as any,
+          firstParty.person?.clientId?.toString(),
+        );
+      }
+
+      this.markPartyInquiriesCompleteOnBlame(req, PartyRole.FIRST, actor);
+      await (req as any).save();
+
+      const nationalCode =
+        dto.nationalCodeOfInsurer || dto.nationalCodeOfDriver || "";
+      const newClaim = await this.createV3ClaimFromBlame(req, actor, {
+        sheba: req.type === BlameRequestType.CAR_BODY ? dto.sheba : undefined,
+        nationalCode:
+          req.type === BlameRequestType.CAR_BODY ? nationalCode : undefined,
+        interimThirdParty: req.type === BlameRequestType.THIRD_PARTY,
+      });
+
+      return {
+        blameRequestId: requestId,
+        partyRole: PartyRole.FIRST,
+        claimRequestId: String(newClaim._id),
+        claimPublicId: req.publicId,
+        message:
+          "Guilty-party inquiries complete and claim created. Proceed with location, description, voice, and signature.",
+      };
+    }
+
+    // Damaged party (THIRD_PARTY only)
+    if (!this.partyHasSigned(req, PartyRole.FIRST)) {
+      throw new BadRequestException(
+        "Guilty party must sign before running damaged-party inquiries.",
+      );
+    }
+    const secondIdx = this.getPartyIndex(req, PartyRole.SECOND);
+    if (secondIdx === -1 || !req.parties[secondIdx]?.person?.userId) {
+      throw new BadRequestException(
+        "Damaged party OTP must be verified before running inquiries.",
+      );
+    }
+
+    const secondParty = req.parties[secondIdx];
+    const firstIdx = this.getPartyIndex(req, PartyRole.FIRST);
+    const firstUserId =
+      firstIdx !== -1 ? req.parties[firstIdx]?.person?.userId : null;
+    const secondUserId = secondParty.person?.userId;
+    if (
+      firstUserId &&
+      secondUserId &&
+      String(firstUserId) === String(secondUserId)
+    ) {
+      throw new BadRequestException(
+        "Guilty and damaged parties are bound to the same user account. " +
+          "Re-verify the second party OTP using a different phone number.",
+      );
+    }
+
+    await this.runPartyInquiriesVinV3Internal(
+      req,
+      dto,
+      PartyRole.SECOND,
+      secondParty,
+    );
+    await this.validateShebaV3(
+      dto as any,
+      secondParty.person?.clientId?.toString(),
+    );
+
+    this.ensureV3GuiltyPartyDecision(req);
+    if (typeof (req as any).markModified === "function") {
+      (req as any).markModified("parties");
+    }
+    await (req as any).save();
+
+    await this.syncV3ClaimDamagedPartyFromBlame(req, dto as any);
+
+    this.markPartyInquiriesCompleteOnBlame(req, PartyRole.SECOND, actor);
+    await (req as any).save();
+
+    return {
+      blameRequestId: requestId,
+      partyRole: PartyRole.SECOND,
+      message:
+        "Damaged-party inquiries complete. Proceed with location, description, voice, and signature.",
+    };
+  }
+
+  /**
+   * VIN variant of `runPartyInquiriesV3Internal`.
+   * Calls `getPolicyByChassisInquiry` (ESG chassis lookup) instead of
+   * `getTejaratBlockInquiry` (plate-based). All other inquiries (personal,
+   * driving licence, car-body for CAR_BODY) are unchanged.
+   */
+  private async runPartyInquiriesVinV3Internal(
+    req: any,
+    partyData: RunInquiriesVinV3Dto,
+    partyRole: PartyRole,
+    party: any,
+  ): Promise<{ clientId?: string }> {
+    const roleLabel = partyRole === PartyRole.FIRST ? "FIRST" : "SECOND";
+    let clientId: string | undefined;
+    const inquiryOptions = (cid?: string) =>
+      cid ? { clientId: cid } : undefined;
+
+    let inquiryRaw: any;
+    let inquiryMapped: any;
+    try {
+      const inquiry = await this.sandHubService.getPolicyByChassisInquiry(
+        partyData.vin,
+        inquiryOptions(party?.person?.clientId?.toString()),
+      );
+      inquiryRaw = inquiry.raw;
+      inquiryMapped = inquiry.mapped;
+      this.recordPartyCaseInquiryStatus(req, "thirdParty", partyRole, true, {
+        source: "ESG_VIN_INQUIRY",
+        raw: inquiryRaw,
+        mapped: inquiryMapped,
+      });
+    } catch (err: any) {
+      this.logger.error(
+        `[V3-VIN] vin inquiry failed for ${roleLabel} party (request=${req._id}): ${err?.message || err}`,
+      );
+      this.recordPartyCaseInquiryStatus(
+        req,
+        "thirdParty",
+        partyRole,
+        false,
+        {},
+        err,
+      );
+      throw new BadRequestException(
+        `${roleLabel} party VIN inquiry failed: ${err?.message || "استعلام در دسترس نیست"}`,
+      );
+    }
+
+    if (inquiryMapped?.Error) {
+      throw new BadRequestException(
+        inquiryMapped.Error.Message ||
+          `${roleLabel} party VIN inquiry returned an error`,
+      );
+    }
+
+    const clientName = inquiryMapped?.CompanyName;
+    const companyCode = inquiryMapped?.CompanyCode;
+    if (!clientName) {
+      throw new BadRequestException(
+        `CompanyName missing from ${roleLabel} party VIN inquiry response`,
+      );
+    }
+    const client = await this.clientService.findOrCreateClientByCompanyCode(
+      companyCode,
+      clientName,
+    );
+    if (!client) {
+      throw new BadRequestException(
+        `CompanyCode missing or invalid in ${roleLabel} party VIN inquiry response`,
+      );
+    }
+    const resolvedClientId = (client as any)?._id ?? (client as any)?._doc?._id;
+    clientId = resolvedClientId ? String(resolvedClientId) : undefined;
+
+    if (!party.person) party.person = {} as any;
+    party.person.clientId = resolvedClientId;
+    party.person.nationalCodeOfInsurer = partyData.nationalCodeOfInsurer;
+    party.person.nationalCodeOfDriver = partyData.nationalCodeOfDriver;
+    party.person.driverIsInsurer = partyData.driverIsInsurer;
+    party.person.insurerBirthday = partyData.insurerBirthday;
+    party.person.driverBirthday =
+      partyData.driverBirthday ??
+      (partyData.driverIsInsurer ? String(partyData.insurerBirthday) : null);
+    if (partyData.insurerLicense)
+      party.person.insurerLicense = partyData.insurerLicense;
+    if (partyData.driverLicense)
+      party.person.driverLicense = partyData.driverLicense;
+
+    if (!party.vehicle) party.vehicle = {} as any;
+    party.vehicle.plateId = partyData.vin; // store VIN as vehicle identifier
+    party.vehicle.name = inquiryMapped?.MapTypNam;
+    party.vehicle.type = `${inquiryMapped?.UsageField ?? ""} / ${inquiryMapped?.UsageName ?? inquiryMapped?.MapUsageName ?? "-"}`;
+    party.vehicle.inquiry = {
+      source: "ESG_VIN_INQUIRY",
+      raw: inquiryRaw,
+      mapped: inquiryMapped,
+    };
+
+    if (!party.insurance) party.insurance = {} as any;
+    party.insurance.policyNumber = inquiryMapped?.PrntPlcyCmpDocNo;
+    party.insurance.company = clientName;
+    party.insurance.financialCeiling = inquiryMapped?.FinancialCvrCptl;
+    party.insurance.startDate = inquiryMapped?.IssueDate;
+    party.insurance.endDate = inquiryMapped?.EndDate;
+
+    if (
+      req.type === BlameRequestType.CAR_BODY &&
+      partyRole === PartyRole.FIRST
+    ) {
+      try {
+        const carBodyInfo = await this.sandHubService.getTejaratCarBodyInquiry(
+          {
+            nationalCodeOfInsurer: partyData.nationalCodeOfInsurer,
+            plate: partyData.vin as any, // VIN used as identifier for CAR_BODY
+          },
+          clientId ? { clientId } : undefined,
+        );
+        this.recordPartyCaseInquiryStatus(req, "carBody", partyRole, true, {
+          source: "TEJARAT_CAR_BODY_VIN_INQUIRY",
+          raw: carBodyInfo.raw,
+          mapped: carBodyInfo.mapped,
+        });
+        party.vehicle.inquiry = {
+          ...party.vehicle.inquiry,
+          carBody: {
+            source: "TEJARAT_CAR_BODY_VIN_INQUIRY",
+            raw: carBodyInfo.raw,
+            mapped: carBodyInfo.mapped,
+          },
+        };
+        const m = carBodyInfo.mapped;
+        (party.insurance as any).carBodyInsurance = {
+          policyNumber: m.policyNumber ?? null,
+          companyId: m.companyId ?? null,
+          companyName: m.CompanyName ?? null,
+        };
+        const cbCompanyCode = m.companyId ?? m.CompanyCode;
+        const cbCompanyName = m.CompanyName ?? m.companyPersianName;
+        if (cbCompanyCode && cbCompanyName) {
+          const cbClient =
+            await this.clientService.findOrCreateClientByCompanyCode(
+              Number(cbCompanyCode),
+              String(cbCompanyName),
+            );
+          const cbClientId =
+            (cbClient as any)?._id ?? (cbClient as any)?._doc?._id;
+          if (cbClientId) {
+            party.person.clientId = cbClientId;
+            clientId = String(cbClientId);
+          }
+        }
+      } catch (err: any) {
+        this.logger.error(
+          `[V3-VIN] car body inquiry failed for request=${req._id}: ${err?.message || err}`,
+        );
+        this.recordPartyCaseInquiryStatus(
+          req,
+          "carBody",
+          partyRole,
+          false,
+          {},
+          err,
+        );
+        throw new BadRequestException(
+          `CAR_BODY VIN inquiry failed: ${err?.message || "استعلام در دسترس نیست"}`,
+        );
+      }
+    }
+
+    const nationalCode =
+      partyData.nationalCodeOfInsurer || partyData.nationalCodeOfDriver;
+    const birthDate = partyData.insurerBirthday ?? partyData.driverBirthday;
+    if (nationalCode && birthDate != null) {
+      try {
+        const personalInquiry = await this.sandHubService.getPersonalInquiry(
+          nationalCode,
+          birthDate as string | number,
+          clientId ? { clientId } : undefined,
+        );
+        this.recordPartyCaseInquiryStatus(
+          req,
+          "person",
+          partyRole,
+          true,
+          personalInquiry,
+        );
+      } catch (err: any) {
+        this.logger.error(
+          `[V3-VIN] personal inquiry failed for ${roleLabel} party request=${req._id}: ${err?.message || err}`,
+        );
+        this.recordPartyCaseInquiryStatus(
+          req,
+          "person",
+          partyRole,
+          false,
+          {},
+          err,
+        );
+        throw new BadRequestException(
+          `${roleLabel} party personal identity inquiry failed: ${err?.message || "استعلام در دسترس نیست"}`,
+        );
+      }
+    }
+
+    const licenseNationalCode = partyData.driverIsInsurer
+      ? partyData.nationalCodeOfInsurer
+      : partyData.nationalCodeOfDriver;
+    const licenseNumber = partyData.driverIsInsurer
+      ? partyData.insurerLicense
+      : partyData.driverLicense;
+
+    if (!licenseNumber) {
+      this.recordPartyCaseInquiryStatus(
+        req,
+        "drivingLicence",
+        partyRole,
+        false,
+        { skipped: true, reason: "No license number provided" },
+      );
+    } else {
+      try {
+        const licenseInquiry = await this.sandHubService.getDrivingLicenseInfo(
+          licenseNationalCode,
+          licenseNumber,
+          clientId ? { clientId } : undefined,
+        );
+        this.recordPartyCaseInquiryStatus(
+          req,
+          "drivingLicence",
+          partyRole,
+          true,
+          licenseInquiry,
+        );
+      } catch (err: any) {
+        this.logger.error(
+          `[V3-VIN] driving license inquiry failed for ${roleLabel} party request=${req._id}: ${err?.message || err}`,
+        );
+        this.recordPartyCaseInquiryStatus(
+          req,
+          "drivingLicence",
+          partyRole,
+          false,
+          {},
+          err,
+        );
+        throw new BadRequestException(
+          `${roleLabel} party driving license inquiry failed: ${err?.message || "استعلام در دسترس نیست"}`,
+        );
+      }
+    }
+
+    return { clientId };
+  }
+
   private assertBlameV3PartyDetailPhase(req: any, partyRole: PartyRole): void {
     this.assertBlameV3ExpertInPerson(req);
     if (partyRole === PartyRole.FIRST) {