diff --git a/src/api.py b/src/api.py
index 293737b..bf6bdb9 100644
--- a/src/api.py
+++ b/src/api.py
@@ -26,6 +26,7 @@ from src.overhaul_scope.router import router as scope_router
 from src.overhaul_activity.router import router as overhaul_activity_router
 from src.calculation_target_reliability.router import router as calculation_target_reliability
 from src.scope_equipment_job.router import router as scope_equipment_job_router
+from src.job.router import router as job_router
 
 class ErrorMessage(BaseModel):
     msg: str
@@ -58,6 +59,8 @@ authenticated_api_router = APIRouter(dependencies=[Depends(JWTBearer())],
 authenticated_api_router.include_router(
     overhaul_router, prefix="/overhauls", tags=["overhaul"])
 
+authenticated_api_router.include_router(
+    job_router, prefix="/jobs", tags=["job"])
 
 # # Overhaul session data
 authenticated_api_router.include_router(
@@ -72,7 +75,7 @@ authenticated_api_router.include_router(
 )
 
 authenticated_api_router.include_router(
-    scope_equipment_job_router, prefix="/scope-equipment-jobs"
+    scope_equipment_job_router, prefix="/scope-equipment-jobs", tags=["scope_equipment", "job"]
 )
 
 # authenticated_api_router.include_router(
diff --git a/src/job/model.py b/src/job/model.py
index 20452b2..5eabb12 100644
--- a/src/job/model.py
+++ b/src/job/model.py
@@ -10,7 +10,7 @@ from sqlalchemy.ext.hybrid import hybrid_property
 class MasterActivity(Base, DefaultMixin):
     __tablename__ = "oh_ms_job"
 
-    name = Column(String, nullable=False)
+    description = Column(String, nullable=False)
     
     # details = relationship(
     #     "MasterActivityDetail",
diff --git a/src/job/schema.py b/src/job/schema.py
index 6de64e8..5fecd9f 100644
--- a/src/job/schema.py
+++ b/src/job/schema.py
@@ -8,7 +8,7 @@ from src.models import DefultBase, Pagination
 
 
 class ActivityMaster(DefultBase):
-    name: str
+    pass
 
 
 class ActivityMasterDetail(DefultBase):
@@ -21,7 +21,7 @@ class ActivityMasterCreate(ActivityMaster):
 
 class ActivityMasterRead(ActivityMaster):
     id: UUID
-    details: List[ActivityMasterDetail] = []
+    description: str
 
 
 class ActivityMasterPagination(Pagination):
diff --git a/src/job/service.py b/src/job/service.py
index 2dead4e..48a3665 100644
--- a/src/job/service.py
+++ b/src/job/service.py
@@ -4,7 +4,7 @@ from sqlalchemy import Select, Delete
 from sqlalchemy.orm import joinedload, selectinload
 from typing import Optional
 
-from .model import MasterActivity, MasterActivityDetail
+from .model import MasterActivity
 from .schema import ActivityMaster, ActivityMasterCreate
 
 from src.database.core import DbSession
@@ -19,8 +19,7 @@ async def get(*, db_session: DbSession, activity_id: str) -> Optional[ActivityMa
 
 
 async def get_all(common: CommonParameters):
-    query = Select(MasterActivity).options(
-        selectinload(MasterActivity.details))
+    query = Select(MasterActivity)
 
     results = await search_filter_sort_paginate(model=query, **common)
 
diff --git a/src/overhaul_activity/router.py b/src/overhaul_activity/router.py
index f3cf3a2..95c4f53 100644
--- a/src/overhaul_activity/router.py
+++ b/src/overhaul_activity/router.py
@@ -1,5 +1,5 @@
 
-from typing import Optional
+from typing import List, Optional
 from uuid import UUID
 from fastapi import APIRouter, HTTPException, Query, status
 
@@ -25,7 +25,7 @@ async def get_scope_equipments(common: CommonParameters, overhaul_session: str,
     )
 
 
-@ router.post("/{overhaul_session}", response_model=StandardResponse[OverhaulActivityRead])
+@ router.post("/{overhaul_session}", response_model=StandardResponse[List[str]])
 async def create_overhaul_equipment(db_session: DbSession, overhaul_activty_in: OverhaulActivityCreate, overhaul_session: str):
 
     activity = await create(db_session=db_session, overhaul_activty_in=overhaul_activty_in, overhaul_session_id=overhaul_session)
diff --git a/src/overhaul_activity/schema.py b/src/overhaul_activity/schema.py
index 315e1a4..9875ac7 100644
--- a/src/overhaul_activity/schema.py
+++ b/src/overhaul_activity/schema.py
@@ -9,7 +9,7 @@ from src.scope_equipment.schema import MasterEquipmentRead
 
 
 class OverhaulActivityBase(DefultBase):
-    assetnum: str = Field(..., description="Assetnum is required")
+    pass
 
 
 class OverhaulActivityCreate(OverhaulActivityBase):
@@ -25,6 +25,7 @@ class OverhaulActivityRead(OverhaulActivityBase):
     id: UUID
     material_cost: Optional[float] = Field(0)
     service_cost: Optional[float] = Field(0)
+    assetnum: str = Field(..., description="Assetnum is required")
     status: str
     equipment: MasterEquipmentRead
 
diff --git a/src/overhaul_activity/service.py b/src/overhaul_activity/service.py
index 1e1ca9e..254e570 100644
--- a/src/overhaul_activity/service.py
+++ b/src/overhaul_activity/service.py
@@ -2,9 +2,10 @@
 
 import asyncio
 from uuid import UUID
-from sqlalchemy import Select, Delete, func, insert, select, update as sqlUpdate
+from sqlalchemy import Select, Delete, func, select, update as sqlUpdate
 from sqlalchemy.orm import joinedload
 from typing import List, Optional
+from sqlalchemy.dialects.postgresql import insert
 
 from src.overhaul_activity.utils import get_material_cost, get_service_cost
 from src.overhaul_scope.model import OverhaulScope
@@ -88,41 +89,44 @@ async def create(*, db_session: DbSession, overhaul_activty_in: OverhaulActivity
         return []
 
     # Get session and count in parallel
-    session, equipment_count = await asyncio.gather(
-        get_session(db_session=db_session, overhaul_session_id=overhaul_session_id),
-        db_session.scalar(
-            select(func.count())
-            .select_from(OverhaulActivity)
-            .where(OverhaulActivity.overhaul_scope_id == overhaul_session_id)
-        )
+    session = await get_session(db_session=db_session, overhaul_session_id=overhaul_session_id)
+    equipment_count = await db_session.scalar(
+        select(func.count())
+        .select_from(OverhaulActivity)
+        .where(OverhaulActivity.overhaul_scope_id == overhaul_session_id)
     )
 
     # Calculate costs for all records
     total_equipment = equipment_count + len(assetnums)
-    material_cost = get_material_cost(scope=session.type, total_equipment=total_equipment)
-    service_cost = get_service_cost(scope=session.type, total_equipment=total_equipment)
-
-    # Bulk create new activities
-    overhaul_activities = [
-        OverhaulActivity(
-            assetnum=assetnum,
-            overhaul_scope_id=overhaul_session_id,
-            material_cost=material_cost,
-            service_cost=service_cost
-        )
+    material_cost = get_material_cost(
+        scope=session.type, total_equipment=total_equipment)
+    service_cost = get_service_cost(
+        scope=session.type, total_equipment=total_equipment)
+
+    # Create the insert statement
+    stmt = insert(OverhaulActivity).values([
+        {
+            'assetnum': assetnum,
+            'overhaul_scope_id': overhaul_session_id,
+            'material_cost': material_cost,
+            'service_cost': service_cost
+        }
         for assetnum in assetnums
-    ]
-
-    # Add new records and update all existing records in parallel
-    await asyncio.gather(
-        db_session.add_all(overhaul_activities),
-        db_session.execute(
-            update(OverhaulActivity)
-            .where(OverhaulActivity.overhaul_scope_id == overhaul_session_id)
-            .values(material_cost=material_cost, service_cost=service_cost)
+    ])
+
+    # Add the ON CONFLICT DO NOTHING clause
+    stmt = stmt.on_conflict_do_nothing(
+            index_elements=["assetnum", "overhaul_scope_id"]
         )
+
+    # Execute the statement
+    db_session.execute(stmt)
+    await db_session.execute(
+        sqlUpdate(OverhaulActivity)
+        .where(OverhaulActivity.overhaul_scope_id == overhaul_session_id)
+        .values(material_cost=material_cost, service_cost=service_cost)
     )
-    
+
     await db_session.commit()
     return assetnums
 
diff --git a/src/scope_equipment_job/model.py b/src/scope_equipment_job/model.py
index cba145b..ea7cac7 100644
--- a/src/scope_equipment_job/model.py
+++ b/src/scope_equipment_job/model.py
@@ -8,7 +8,7 @@ from sqlalchemy.ext.hybrid import hybrid_property
 
 
 class ScopeEquipmentJob(Base, DefaultMixin):
-    __tablename__ = "oh_mas_scope_equipment_job"
+    __tablename__ = "oh_ms_scope_equipment_job"
 
     assetnum = Column(String, nullable=False)
     job_id = Column(UUID(as_uuid=True), ForeignKey(
diff --git a/src/scope_equipment_job/schema.py b/src/scope_equipment_job/schema.py
index 26b4771..e8097d4 100644
--- a/src/scope_equipment_job/schema.py
+++ b/src/scope_equipment_job/schema.py
@@ -9,7 +9,7 @@ from src.models import DefultBase, Pagination
 
 
 class ScopeEquipmentJobBase(DefultBase):
-    assetnum: str = Field(..., description="Assetnum is required")
+    assetnum: Optional[str] = Field(None, description="Assetnum is required")
 
 
 class ScopeEquipmentJobCreate(ScopeEquipmentJobBase):
diff --git a/src/scope_equipment_job/service.py b/src/scope_equipment_job/service.py
index 6ce245b..cd8a4c4 100644
--- a/src/scope_equipment_job/service.py
+++ b/src/scope_equipment_job/service.py
@@ -65,7 +65,7 @@ async def create(*, db_session: DbSession, assetnum, scope_job_in: ScopeEquipmen
     for job_id in scope_job_in.job_ids:
         scope_equipment_job = ScopeEquipmentJob(
             assetnum=assetnum, job_id=job_id)
-        scope_jobs.appeand(scope_equipment_job)
+        scope_jobs.append(scope_equipment_job)
 
     db_session.add_all(scope_jobs)
     await db_session.commit()