diff --git a/src/space-model/services/space-model.service.ts b/src/space-model/services/space-model.service.ts
index 37b9ab1..7359e25 100644
--- a/src/space-model/services/space-model.service.ts
+++ b/src/space-model/services/space-model.service.ts
@@ -6,10 +6,12 @@ import { ProjectParam } from 'src/community/dtos';
 import { SuccessResponseDto } from '@app/common/dto/success.response.dto';
 import { SubSpaceModelService } from './subspace-model.service';
 import { SpaceProductModelService } from './space-product-model.service';
+import { DataSource } from 'typeorm';
 
 @Injectable()
 export class SpaceModelService {
   constructor(
+    private readonly dataSource: DataSource,
     private readonly spaceModelRepository: SpaceModelRepository,
     private readonly projectRepository: ProjectRepository,
     private readonly subSpaceModelService: SubSpaceModelService,
@@ -24,6 +26,11 @@ export class SpaceModelService {
       createSpaceModelDto;
     const project = await this.validateProject(params.projectUuid);
 
+    const queryRunner = this.dataSource.createQueryRunner();
+
+    await queryRunner.connect();
+    await queryRunner.startTransaction();
+
     try {
       const isModelExist = await this.validateName(
         modelName,
@@ -40,17 +47,24 @@ export class SpaceModelService {
         modelName,
         project,
       });
-      const savedSpaceModel = await this.spaceModelRepository.save(spaceModel);
+      const savedSpaceModel = await queryRunner.manager.save(spaceModel);
 
-      await this.subSpaceModelService.createSubSpaceModels(
-        subspaceModels,
-        savedSpaceModel,
-      );
+      if (subspaceModels) {
+        await this.subSpaceModelService.createSubSpaceModels(
+          subspaceModels,
+          savedSpaceModel,
+          queryRunner,
+        );
+      }
 
-      await this.spaceProductModelService.createSpaceProductModels(
-        spaceProductModels,
-        savedSpaceModel,
-      );
+      if (spaceProductModels) {
+        await this.spaceProductModelService.createSpaceProductModels(
+          spaceProductModels,
+          savedSpaceModel,
+          queryRunner,
+        );
+      }
+      await queryRunner.commitTransaction();
 
       return new SuccessResponseDto({
         message: `Successfully created new space model with uuid ${savedSpaceModel.uuid}`,
@@ -58,6 +72,8 @@ export class SpaceModelService {
         statusCode: HttpStatus.CREATED,
       });
     } catch (error) {
+      await queryRunner.rollbackTransaction();
+
       if (error instanceof HttpException) {
         throw error;
       }
@@ -66,6 +82,8 @@ export class SpaceModelService {
         error.message || `An unexpected error occurred`,
         HttpStatus.INTERNAL_SERVER_ERROR,
       );
+    } finally {
+      await queryRunner.release();
     }
   }
 
diff --git a/src/space-model/services/space-product-item-model.service.ts b/src/space-model/services/space-product-item-model.service.ts
index 0a5b43d..b2f856c 100644
--- a/src/space-model/services/space-product-item-model.service.ts
+++ b/src/space-model/services/space-product-item-model.service.ts
@@ -5,6 +5,7 @@ import {
 } from '@app/common/modules/space-model';
 import { HttpException, HttpStatus, Injectable } from '@nestjs/common';
 import { CreateSpaceProductItemModelDto } from '../dtos';
+import { QueryRunner } from 'typeorm';
 
 @Injectable()
 export class SpaceProductItemModelService {
@@ -16,41 +17,37 @@ export class SpaceProductItemModelService {
     itemModelDtos: CreateSpaceProductItemModelDto[],
     spaceProductModel: SpaceProductModelEntity,
     spaceModel: SpaceModelEntity,
+    queryRunner: QueryRunner,
   ) {
-    try {
-      await this.validateTags(itemModelDtos, spaceModel);
+    await this.validateTags(itemModelDtos, spaceModel, queryRunner);
 
-      for (const itemModelDto of itemModelDtos) {
-        await this.create(itemModelDto, spaceProductModel, spaceModel);
-      }
+    try {
+      const productItems = itemModelDtos.map((dto) =>
+        queryRunner.manager.create(this.spaceProductItemRepository.target, {
+          tag: dto.tag,
+          spaceProductModel,
+          spaceModel,
+        }),
+      );
+
+      await queryRunner.manager.save(productItems);
     } catch (error) {
       if (error instanceof HttpException) {
         throw error;
       }
 
       throw new HttpException(
-        error.message || `An unexpected error occurred`,
+        error.message ||
+          'An unexpected error occurred while creating product items.',
         HttpStatus.INTERNAL_SERVER_ERROR,
       );
     }
   }
 
-  async create(
-    itemModelDto: CreateSpaceProductItemModelDto,
-    spaceProductModel: SpaceProductModelEntity,
-    spaceModel: SpaceModelEntity,
-  ) {
-    const productItem = this.spaceProductItemRepository.create({
-      tag: itemModelDto.tag,
-      spaceProductModel,
-      spaceModel,
-    });
-    await this.spaceProductItemRepository.save(productItem);
-  }
-
-  async validateTags(
+  private async validateTags(
     itemModelDtos: CreateSpaceProductItemModelDto[],
     spaceModel: SpaceModelEntity,
+    queryRunner: QueryRunner,
   ) {
     const incomingTags = itemModelDtos.map((item) => item.tag);
 
@@ -59,15 +56,18 @@ export class SpaceProductItemModelService {
     );
     if (duplicateTags.length > 0) {
       throw new HttpException(
-        `Duplicate tags found in request: ${duplicateTags.join(', ')}`,
-        HttpStatus.CONFLICT,
+        `Duplicate tags found in the request: ${[...new Set(duplicateTags)].join(', ')}`,
+        HttpStatus.BAD_REQUEST,
       );
     }
 
-    const existingTags = await this.spaceProductItemRepository.find({
-      where: { spaceModel },
-      select: ['tag'],
-    });
+    const existingTags = await queryRunner.manager.find(
+      this.spaceProductItemRepository.target,
+      {
+        where: { spaceModel },
+        select: ['tag'],
+      },
+    );
     const existingTagSet = new Set(existingTags.map((item) => item.tag));
 
     const conflictingTags = incomingTags.filter((tag) =>
diff --git a/src/space-model/services/space-product-model.service.ts b/src/space-model/services/space-product-model.service.ts
index cf60203..aa08a16 100644
--- a/src/space-model/services/space-product-model.service.ts
+++ b/src/space-model/services/space-product-model.service.ts
@@ -6,6 +6,7 @@ import { HttpException, HttpStatus, Injectable } from '@nestjs/common';
 import { CreateSpaceProductModelDto } from '../dtos';
 import { ProductRepository } from '@app/common/modules/product/repositories';
 import { SpaceProductItemModelService } from './space-product-item-model.service';
+import { QueryRunner } from 'typeorm';
 
 @Injectable()
 export class SpaceProductModelService {
@@ -18,60 +19,66 @@ export class SpaceProductModelService {
   async createSpaceProductModels(
     spaceProductModelDtos: CreateSpaceProductModelDto[],
     spaceModel: SpaceModelEntity,
+    queryRunner: QueryRunner,
   ) {
     try {
-      for (const spaceProductModelDto of spaceProductModelDtos) {
-        await this.create(spaceProductModelDto, spaceModel);
-      }
+      const productModels = await Promise.all(
+        spaceProductModelDtos.map(async (dto) => {
+          this.validateProductCount(dto);
+          const product = await this.getProduct(dto.productId);
+          return queryRunner.manager.create(
+            this.spaceProductModelRepository.target,
+            {
+              product,
+              productCount: dto.productCount,
+              spaceModel,
+            },
+          );
+        }),
+      );
+
+      const savedProductModels = await queryRunner.manager.save(productModels);
+
+      await Promise.all(
+        spaceProductModelDtos.map((dto, index) =>
+          this.spaceProductItemModelService.createProdutItemModel(
+            dto.items,
+            savedProductModels[index],
+            spaceModel,
+            queryRunner,
+          ),
+        ),
+      );
     } catch (error) {
       if (error instanceof HttpException) {
         throw error;
       }
-
       throw new HttpException(
-        error.message || `An unexpected error occurred`,
+        error.message ||
+          'An unexpected error occurred while creating product models.',
         HttpStatus.INTERNAL_SERVER_ERROR,
       );
     }
   }
 
-  async create(
-    spaceProductModelDto: CreateSpaceProductModelDto,
-    spaceModel: SpaceModelEntity,
-  ) {
-    this.validateCount(spaceProductModelDto);
-
-    const product = await this.productRepository.findOneBy({
-      uuid: spaceProductModelDto.productId,
-    });
-    if (!product) {
+  private validateProductCount(dto: CreateSpaceProductModelDto) {
+    const productItemCount = dto.items.length;
+    if (dto.productCount !== productItemCount) {
       throw new HttpException(
-        `Product with ID ${spaceProductModelDto.productId} not found`,
-        HttpStatus.NOT_FOUND,
-      );
-    }
-    const spaceProductModel = this.spaceProductModelRepository.create({
-      product,
-      productCount: spaceProductModelDto.productCount,
-      spaceModel: spaceModel,
-    });
-    const newProductModel =
-      await this.spaceProductModelRepository.save(spaceProductModel);
-
-    await this.spaceProductItemModelService.createProdutItemModel(
-      spaceProductModelDto.items,
-      newProductModel,
-      spaceModel,
-    );
-  }
-
-  private validateCount(spaceProductModelDto: CreateSpaceProductModelDto) {
-    const productItemCount = spaceProductModelDto.items.length;
-    if (spaceProductModelDto.productCount !== productItemCount) {
-      throw new HttpException(
-        `Product count (${spaceProductModelDto.productCount}) does not match the number of items (${productItemCount}) for product ID ${spaceProductModelDto.productId}.`,
+        `Product count (${dto.productCount}) does not match the number of items (${productItemCount}) for product ID ${dto.productId}.`,
         HttpStatus.BAD_REQUEST,
       );
     }
   }
+
+  private async getProduct(productId: string) {
+    const product = await this.productRepository.findOneBy({ uuid: productId });
+    if (!product) {
+      throw new HttpException(
+        `Product with ID ${productId} not found.`,
+        HttpStatus.NOT_FOUND,
+      );
+    }
+    return product;
+  }
 }
diff --git a/src/space-model/services/subspace-model.service.ts b/src/space-model/services/subspace-model.service.ts
index 5d4d347..a6a75aa 100644
--- a/src/space-model/services/subspace-model.service.ts
+++ b/src/space-model/services/subspace-model.service.ts
@@ -4,6 +4,7 @@ import {
 } from '@app/common/modules/space-model';
 import { HttpException, HttpStatus, Injectable } from '@nestjs/common';
 import { CreateSubspaceModelDto } from '../dtos';
+import { QueryRunner } from 'typeorm';
 
 @Injectable()
 export class SubSpaceModelService {
@@ -14,16 +15,19 @@ export class SubSpaceModelService {
   async createSubSpaceModels(
     subSpaceModelDtos: CreateSubspaceModelDto[],
     spaceModel: SpaceModelEntity,
+    queryRunner: QueryRunner,
   ) {
+    this.validateInputDtos(subSpaceModelDtos);
+
     try {
-      this.validateInputDtos(subSpaceModelDtos);
-      for (const subspaceDto of subSpaceModelDtos) {
-        const subspace = this.subspaceModelRepository.create({
+      const subspaces = subSpaceModelDtos.map((subspaceDto) =>
+        queryRunner.manager.create(this.subspaceModelRepository.target, {
           subspaceName: subspaceDto.subspaceName,
           spaceModel: spaceModel,
-        });
-        await this.subspaceModelRepository.save(subspace);
-      }
+        }),
+      );
+
+      await queryRunner.manager.save(subspaces);
     } catch (error) {
       if (error instanceof HttpException) {
         throw error;