diff --git a/src/space-model/commands/index.ts b/src/space-model/commands/index.ts
index 4a7aafa..59f7dfc 100644
--- a/src/space-model/commands/index.ts
+++ b/src/space-model/commands/index.ts
@@ -1,2 +1,3 @@
 export * from './propagate-space-model-deletion.command';
 export * from './propagate-subspace-model-update-command';
+export * from './propagate-space-model-product-allocation-command';
\ No newline at end of file
diff --git a/src/space-model/commands/propagate-space-model-product-allocation-command.ts b/src/space-model/commands/propagate-space-model-product-allocation-command.ts
new file mode 100644
index 0000000..1240bd3
--- /dev/null
+++ b/src/space-model/commands/propagate-space-model-product-allocation-command.ts
@@ -0,0 +1,16 @@
+import { ICommand } from '@nestjs/cqrs';
+import { SpaceModelEntity } from '@app/common/modules/space-model';
+import { IUpdatedSpaceAllocations } from '../interfaces';
+import { SpaceEntity } from '@app/common/modules/space/entities/space.entity';
+
+export class PropogateUpdateSpaceModelProductAllocationCommand
+  implements ICommand
+{
+  constructor(
+    public readonly param: {
+      spaceModel: SpaceModelEntity;
+      updatedAllocations: IUpdatedSpaceAllocations[];
+      spaces: SpaceEntity[];
+    },
+  ) {}
+}
diff --git a/src/space-model/handlers/index.ts b/src/space-model/handlers/index.ts
index d7bb550..ff9ffbb 100644
--- a/src/space-model/handlers/index.ts
+++ b/src/space-model/handlers/index.ts
@@ -1,2 +1,3 @@
-export * from './propate-subspace-handler';
+export * from './propogate-subspace-handler';
 export * from './propogate-space-model-deletion.handler';
+export * from './propogate-space-model-product-allocation.handler';
diff --git a/src/space-model/handlers/propogate-space-model-product-allocation.handler.ts b/src/space-model/handlers/propogate-space-model-product-allocation.handler.ts
new file mode 100644
index 0000000..51f2623
--- /dev/null
+++ b/src/space-model/handlers/propogate-space-model-product-allocation.handler.ts
@@ -0,0 +1,123 @@
+import { CommandHandler, ICommandHandler } from '@nestjs/cqrs';
+import { PropogateUpdateSpaceModelProductAllocationCommand } from '../commands';
+import { SpaceProductAllocationRepository } from '@app/common/modules/space';
+import { SubspaceModelProductAllocationRepoitory } from '@app/common/modules/space-model';
+import {
+  SubspaceRepository,
+  SubspaceProductAllocationRepository,
+} from '@app/common/modules/space/repositories/subspace.repository';
+
+@CommandHandler(PropogateUpdateSpaceModelProductAllocationCommand)
+export class PropogateUpdateSpaceModelProductAllocationHandler
+  implements ICommandHandler<PropogateUpdateSpaceModelProductAllocationCommand>
+{
+  constructor(
+    private readonly subspaceRepository: SubspaceRepository,
+    private readonly subspaceModelProductRepository: SubspaceModelProductAllocationRepoitory,
+    private readonly subspaceProductRepository: SubspaceProductAllocationRepository,
+    private readonly spaceProductRepository: SpaceProductAllocationRepository,
+  ) {}
+
+  async execute(
+    command: PropogateUpdateSpaceModelProductAllocationCommand,
+  ): Promise<void> {
+    const { spaces, updatedAllocations } = command.param;
+
+    try {
+      if (!updatedAllocations || updatedAllocations.length === 0) {
+        console.log('No updated allocations found. Exiting execution.');
+        return;
+      }
+
+      console.log(`Processing ${updatedAllocations.length} allocations...`);
+
+      for (const allocation of updatedAllocations) {
+        try {
+          if (allocation.allocation) {
+            const spaceAllocations = await this.spaceProductRepository.find({
+              where: { uuid: allocation.allocation.uuid },
+              relations: ['tags'],
+            });
+
+            if (!spaceAllocations || spaceAllocations.length === 0) {
+              console.warn(
+                `No space allocations found for UUID: ${allocation.allocation.uuid}`,
+              );
+              continue;
+            }
+
+            if (allocation.tagsAdded?.length) {
+              for (const spaceAllocation of spaceAllocations) {
+                spaceAllocation.tags.push(...allocation.tagsAdded);
+              }
+              await this.spaceProductRepository.save(spaceAllocations);
+              console.log(
+                `Added tags to ${spaceAllocations.length} space allocations.`,
+              );
+            }
+
+            if (allocation.tagsRemoved?.length) {
+              const tagsToRemoveUUIDs = new Set(
+                allocation.tagsRemoved.map((tag) => tag.uuid),
+              );
+
+              for (const spaceAllocation of spaceAllocations) {
+                spaceAllocation.tags = spaceAllocation.tags.filter(
+                  (tag) => !tagsToRemoveUUIDs.has(tag.uuid),
+                );
+              }
+              await this.spaceProductRepository.save(spaceAllocations);
+              console.log(
+                `Removed tags from ${spaceAllocations.length} space allocations.`,
+              );
+            }
+          }
+
+          if (allocation.deletedAllocation) {
+            const spaceAllocations = await this.spaceProductRepository.find({
+              where: { uuid: allocation.deletedAllocation.uuid },
+              relations: ['tags'],
+            });
+
+            if (!spaceAllocations || spaceAllocations.length === 0) {
+              console.warn(
+                `No space allocations found to delete for UUID: ${allocation.deletedAllocation.uuid}`,
+              );
+              continue;
+            }
+
+            await this.spaceProductRepository.remove(spaceAllocations);
+            console.log(
+              `Deleted ${spaceAllocations.length} space allocations.`,
+            );
+          }
+
+          if (allocation.newAllocation) {
+            const newAllocations = spaces.map((space) =>
+              this.spaceProductRepository.create({
+                space,
+                product: allocation.newAllocation.product,
+                tags: allocation.newAllocation.tags,
+                inheritedFromModel: allocation.newAllocation,
+              }),
+            );
+
+            await this.spaceProductRepository.save(newAllocations);
+            console.log(
+              `Created ${newAllocations.length} new space allocations.`,
+            );
+          }
+        } catch (error) {
+          console.error(
+            `Error processing allocation update: ${JSON.stringify(allocation)}`,
+            error,
+          );
+        }
+      }
+
+      console.log('Finished processing all allocations.');
+    } catch (error) {
+      console.error('Unexpected error during execute method:', error);
+    }
+  }
+}
diff --git a/src/space-model/handlers/propogate-subspace-handler.ts b/src/space-model/handlers/propogate-subspace-handler.ts
index 68b36b4..d651d85 100644
--- a/src/space-model/handlers/propogate-subspace-handler.ts
+++ b/src/space-model/handlers/propogate-subspace-handler.ts
@@ -1,16 +1,12 @@
 import { CommandHandler, ICommandHandler } from '@nestjs/cqrs';
 import { PropogateUpdateSpaceModelCommand } from '../commands';
-import {
-  SpaceProductAllocationRepository,
-  SpaceRepository,
-} from '@app/common/modules/space';
+import { SpaceProductAllocationRepository } from '@app/common/modules/space';
 import {
   SubspaceProductAllocationRepository,
   SubspaceRepository,
 } from '@app/common/modules/space/repositories/subspace.repository';
 import { SubspaceModelProductAllocationRepoitory } from '@app/common/modules/space-model';
 import { In } from 'typeorm';
-import { TagService } from 'src/space/services/tag';
 import { ISingleSubspaceModel } from '../interfaces';
 import { SpaceEntity } from '@app/common/modules/space/entities/space.entity';
 import { ModifyAction } from '@app/common/constants/modify-action.enum';
@@ -21,9 +17,7 @@ export class PropogateUpdateSpaceModelHandler
   implements ICommandHandler<PropogateUpdateSpaceModelCommand>
 {
   constructor(
-    private readonly spaceRepository: SpaceRepository,
     private readonly subspaceRepository: SubspaceRepository,
-    private readonly tagService: TagService,
     private readonly subspaceModelProductRepository: SubspaceModelProductAllocationRepoitory,
     private readonly subspaceProductRepository: SubspaceProductAllocationRepository,
     private readonly spaceProductRepository: SpaceProductAllocationRepository,
diff --git a/src/space-model/interfaces/index.ts b/src/space-model/interfaces/index.ts
index 6d55822..61561f8 100644
--- a/src/space-model/interfaces/index.ts
+++ b/src/space-model/interfaces/index.ts
@@ -1,3 +1,4 @@
 export * from './update-subspace.interface';
 export * from './modify-subspace.interface';
 export * from './single-subspace.interface';
+export * from './space-product-allocation.interface';
diff --git a/src/space-model/interfaces/space-product-allocation.interface.ts b/src/space-model/interfaces/space-product-allocation.interface.ts
new file mode 100644
index 0000000..fe8e3fc
--- /dev/null
+++ b/src/space-model/interfaces/space-product-allocation.interface.ts
@@ -0,0 +1,10 @@
+import { SpaceModelProductAllocationEntity } from '@app/common/modules/space-model';
+import { NewTagEntity } from '@app/common/modules/tag';
+
+export type IUpdatedSpaceAllocations = {
+  allocation?: SpaceModelProductAllocationEntity;
+  tagsRemoved?: NewTagEntity[];
+  tagsAdded?: NewTagEntity[];
+  newAllocation?: SpaceModelProductAllocationEntity;
+  deletedAllocation?: SpaceModelProductAllocationEntity;
+};
diff --git a/src/space-model/services/space-model-product-allocation.service.ts b/src/space-model/services/space-model-product-allocation.service.ts
index aa2c3da..d8f78a6 100644
--- a/src/space-model/services/space-model-product-allocation.service.ts
+++ b/src/space-model/services/space-model-product-allocation.service.ts
@@ -15,6 +15,7 @@ import { NewTagEntity } from '@app/common/modules/tag';
 import { ProductEntity } from '@app/common/modules/product/entities';
 import { SpaceRepository } from '@app/common/modules/space';
 import { ProjectEntity } from '@app/common/modules/project/entities';
+import { IUpdatedSpaceAllocations } from '../interfaces';
 
 @Injectable()
 export class SpaceModelProductAllocationService {
@@ -30,10 +31,12 @@ export class SpaceModelProductAllocationService {
     tags: ProcessTagDto[],
     queryRunner?: QueryRunner,
     modifySubspaceModels?: ModifySubspaceModelDto[],
-  ): Promise<SpaceModelProductAllocationEntity[]> {
+  ): Promise<IUpdatedSpaceAllocations[]> {
     try {
       if (!tags.length) return [];
 
+      const allocationUpdates: IUpdatedSpaceAllocations[] = [];
+
       const processedTags = await this.tagService.processTags(
         tags,
         projectUuid,
@@ -108,8 +111,15 @@ export class SpaceModelProductAllocationService {
           if (!allocation) {
             allocation = this.createNewAllocation(spaceModel, tag, queryRunner);
             productAllocations.push(allocation);
+            allocationUpdates.push({
+              newAllocation: allocation,
+            });
           } else if (!allocation.tags.some((t) => t.uuid === tag.uuid)) {
             allocation.tags.push(tag);
+            allocationUpdates.push({
+              allocation: allocation,
+              tagsAdded: [tag],
+            });
             await this.saveAllocation(allocation, queryRunner);
           }
         }
@@ -119,7 +129,7 @@ export class SpaceModelProductAllocationService {
         await this.saveAllocations(productAllocations, queryRunner);
       }
 
-      return productAllocations;
+      return allocationUpdates;
     } catch (error) {
       throw this.handleError(error, 'Failed to create product allocations');
     }
@@ -131,7 +141,7 @@ export class SpaceModelProductAllocationService {
     spaceModel: SpaceModelEntity,
     queryRunner: QueryRunner,
     modifySubspaceModels?: ModifySubspaceModelDto[],
-  ): Promise<void> {
+  ): Promise<IUpdatedSpaceAllocations[]> {
     try {
       const addDtos = dtos.filter((dto) => dto.action === ModifyAction.ADD);
       const deleteDtos = dtos.filter(
@@ -144,11 +154,13 @@ export class SpaceModelProductAllocationService {
         uuid: dto.newTagUuid,
       }));
 
+      // Process added tags
       const processedTags = await this.tagService.processTags(
         addTagDtos,
         project.uuid,
         queryRunner,
       );
+
       const addTagUuidMap = new Map<string, ModifyTagModelDto>();
       processedTags.forEach((tag, index) => {
         addTagUuidMap.set(tag.uuid, addDtos[index]);
@@ -161,6 +173,7 @@ export class SpaceModelProductAllocationService {
         [...addTagUuids].filter((uuid) => deleteTagUuids.has(uuid)),
       );
 
+      // Filter out tags that are added and deleted in the same request
       const filteredDtos = dtos.filter(
         (dto) =>
           !(
@@ -174,7 +187,8 @@ export class SpaceModelProductAllocationService {
           ),
       );
 
-      await Promise.all([
+      // Process add and delete actions concurrently
+      const [updatedAllocations, deletedAllocations] = await Promise.all([
         this.processAddActions(
           filteredDtos,
           project.uuid,
@@ -184,6 +198,9 @@ export class SpaceModelProductAllocationService {
         ),
         this.processDeleteActions(filteredDtos, queryRunner, spaceModel),
       ]);
+
+      // Combine results and return
+      return [...updatedAllocations, ...deletedAllocations];
     } catch (error) {
       throw this.handleError(error, 'Error while updating product allocations');
     }
@@ -195,7 +212,9 @@ export class SpaceModelProductAllocationService {
     spaceModel: SpaceModelEntity,
     queryRunner: QueryRunner,
     modifySubspaceModels?: ModifySubspaceModelDto[],
-  ): Promise<void> {
+  ): Promise<IUpdatedSpaceAllocations[]> {
+    let allocationUpdates: IUpdatedSpaceAllocations[] = [];
+
     const addDtos: ProcessTagDto[] = dtos
       .filter((dto) => dto.action === ModifyAction.ADD)
       .map((dto) => ({
@@ -205,7 +224,7 @@ export class SpaceModelProductAllocationService {
       }));
 
     if (addDtos.length > 0) {
-      await this.createProductAllocations(
+      allocationUpdates = await this.createProductAllocations(
         projectUuid,
         spaceModel,
         addDtos,
@@ -213,6 +232,7 @@ export class SpaceModelProductAllocationService {
         modifySubspaceModels,
       );
     }
+    return allocationUpdates;
   }
 
   private createNewAllocation(
@@ -292,11 +312,12 @@ export class SpaceModelProductAllocationService {
     dtos: ModifyTagModelDto[],
     queryRunner: QueryRunner,
     spaceModel: SpaceModelEntity,
-  ): Promise<SpaceModelProductAllocationEntity[]> {
+  ): Promise<IUpdatedSpaceAllocations[]> {
     try {
       if (!dtos || dtos.length === 0) {
         return;
       }
+      let allocationUpdateToPropagate: IUpdatedSpaceAllocations[] = [];
 
       const tagUuidsToDelete = dtos
         .filter((dto) => dto.action === ModifyAction.DELETE && dto.tagUuid)
@@ -331,15 +352,26 @@ export class SpaceModelProductAllocationService {
           (tag) => !tagUuidsToDelete.includes(tag.uuid),
         );
 
+        const deletedTags = allocation.tags.filter((tag) =>
+          tagUuidsToDelete.includes(tag.uuid),
+        );
+
         if (updatedTags.length === allocation.tags.length) {
           continue;
         }
 
         if (updatedTags.length === 0) {
           deletedAllocations.push(allocation);
+          allocationUpdateToPropagate.push({
+            deletedAllocation: allocation,
+          });
         } else {
           allocation.tags = updatedTags;
           allocationUpdates.push(allocation);
+          allocationUpdateToPropagate.push({
+            allocation: allocation,
+            tagsRemoved: deletedTags,
+          });
         }
       }
 
@@ -372,7 +404,7 @@ export class SpaceModelProductAllocationService {
         )
         .execute();
 
-      return deletedAllocations;
+      return allocationUpdateToPropagate;
     } catch (error) {
       throw this.handleError(error, `Failed to delete tags in space model`);
     }
diff --git a/src/space-model/services/space-model.service.ts b/src/space-model/services/space-model.service.ts
index eed3e34..cdc0ec6 100644
--- a/src/space-model/services/space-model.service.ts
+++ b/src/space-model/services/space-model.service.ts
@@ -28,6 +28,7 @@ import { SpaceModelProductAllocationService } from './space-model-product-alloca
 import {
   PropogateDeleteSpaceModelCommand,
   PropogateUpdateSpaceModelCommand,
+  PropogateUpdateSpaceModelProductAllocationCommand,
 } from '../commands';
 import {
   SpaceProductAllocationRepository,
@@ -47,7 +48,11 @@ import { SpaceProductAllocationEntity } from '@app/common/modules/space/entities
 import { SubspaceEntity } from '@app/common/modules/space/entities/subspace/subspace.entity';
 import { SubspaceProductAllocationEntity } from '@app/common/modules/space/entities/subspace/subspace-product-allocation.entity';
 import { DeviceEntity } from '@app/common/modules/device/entities';
-import { ISingleSubspaceModel, ISubspaceModelUpdates } from '../interfaces';
+import {
+  ISingleSubspaceModel,
+  ISubspaceModelUpdates,
+  IUpdatedSpaceAllocations,
+} from '../interfaces';
 
 @Injectable()
 export class SpaceModelService {
@@ -200,6 +205,7 @@ export class SpaceModelService {
     );
     await queryRunner.connect();
     let modifiedSubspaces: ISubspaceModelUpdates;
+    let modifiedProductAllocations: IUpdatedSpaceAllocations[];
     try {
       await queryRunner.startTransaction();
       const spaces = await this.fetchModelSpaces(spaceModel);
@@ -230,24 +236,35 @@ export class SpaceModelService {
       }
 
       if (dto.tags) {
-        await this.spaceModelProductAllocationService.updateProductAllocations(
-          dto.tags,
-          project,
-          spaceModel,
-          queryRunner,
-          dto.subspaceModels,
-        );
+        modifiedProductAllocations =
+          await this.spaceModelProductAllocationService.updateProductAllocations(
+            dto.tags,
+            project,
+            spaceModel,
+            queryRunner,
+            dto.subspaceModels,
+          );
       }
       await queryRunner.commitTransaction();
 
       await this.commandBus.execute(
         new PropogateUpdateSpaceModelCommand({
           spaceModel: spaceModel,
-          subspaceModels: modifiedSubspaces,
+          subspaceUpdates: modifiedSubspaces,
           spaces: spaces,
         }),
       );
 
+      if (modifiedProductAllocations?.length > 0) {
+        await this.commandBus.execute(
+          new PropogateUpdateSpaceModelProductAllocationCommand({
+            spaceModel: spaceModel,
+            updatedAllocations: modifiedProductAllocations,
+            spaces: spaces,
+          }),
+        );
+      }
+
       return new SuccessResponseDto({
         message: 'SpaceModel updated successfully',
       });
diff --git a/src/space-model/space-model.module.ts b/src/space-model/space-model.module.ts
index d49f590..41aebed 100644
--- a/src/space-model/space-model.module.ts
+++ b/src/space-model/space-model.module.ts
@@ -15,6 +15,7 @@ import { ProductRepository } from '@app/common/modules/product/repositories';
 import {
   PropogateDeleteSpaceModelHandler,
   PropogateUpdateSpaceModelHandler,
+  PropogateUpdateSpaceModelProductAllocationHandler,
 } from './handlers';
 import { CqrsModule } from '@nestjs/cqrs';
 import {
@@ -60,6 +61,7 @@ import { AutomationRepository } from '@app/common/modules/automation/repositorie
 const CommandHandlers = [
   PropogateUpdateSpaceModelHandler,
   PropogateDeleteSpaceModelHandler,
+  PropogateUpdateSpaceModelProductAllocationHandler,
 ];
 
 @Module({