diff --git a/backend/alembic/versions/531bf8cdae06_create_material_types_table.py b/backend/alembic/versions/531bf8cdae06_create_material_types_table.py
index 2179bc81..bfdc01b1 100644
--- a/backend/alembic/versions/531bf8cdae06_create_material_types_table.py
+++ b/backend/alembic/versions/531bf8cdae06_create_material_types_table.py
@@ -81,6 +81,7 @@ def upgrade() -> None:
         sa.Column("description", sa.String(length=50), nullable=False),
         sa.Column("note", sa.String(length=500), nullable=False),
         sa.Column("type", sa.String(length=15), nullable=False),
+        sa.Column("operation", sa.String(length=5), nullable=False),
         sa.PrimaryKeyConstraint("key", name="invoice_types_pkey"),
         schema="public",
     )
diff --git a/backend/api/v1/modules/a76/invoices/models.py b/backend/api/v1/modules/a76/invoices/models.py
index 8c0feee9..bed62eaf 100644
--- a/backend/api/v1/modules/a76/invoices/models.py
+++ b/backend/api/v1/modules/a76/invoices/models.py
@@ -1,3 +1,4 @@
+from enum import Enum
 from typing import Optional, List
 from sqlalchemy import BigInteger, Date, ForeignKey, Integer, Numeric, String, Text, TIMESTAMP
 from sqlalchemy.orm import Mapped, mapped_column, relationship
@@ -5,42 +6,68 @@ from core.database import Base
 from datetime import datetime
 from ....common.base_models import TenantScopedMixin, TimestampMixin
 
+
+class OperationType(str, Enum):
+    IMP = "imp"  # Importación
+    EXP = "exp"  # Exportación
+
 # --- 1. Invoice Header (invoice_header) ---
+
+
 class InvoiceHeader(Base, TenantScopedMixin, TimestampMixin):
     __tablename__ = "invoice_header"
     __tableargs__ = {'schema': 'a76'}
 
-    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
-    
+    id: Mapped[int] = mapped_column(
+        BigInteger, primary_key=True, autoincrement=True)
+
     # Identifiers
-    legacy_id: Mapped[Optional[int]] = mapped_column(Integer) # CONSECUTIVO
-    operation_type: Mapped[str] = mapped_column(String(20)) # TIPOMOVIMIENTO / Clasifica IMP/EXP/SM
-    invoice_number: Mapped[Optional[str]] = mapped_column(String(20)) # FACTURAIMPO/FACTURAEXPO/FACTURAREMISION
-    project_number: Mapped[Optional[str]] = mapped_column(String(14)) # NUMPROYECTO
-    purchase_order: Mapped[Optional[str]] = mapped_column(String(50)) # ORDENCOMPRA
-    related_doc_id: Mapped[Optional[int]] = mapped_column(Integer) # IDRELDOC (Para Rectificaciones)
-    
+    operation_type: Mapped[OperationType] = mapped_column(
+        String(3))  # TIPOMOVIMIENTO / Clasifica IMP/EXP
+    invoice_type: Mapped[Optional[str]] = mapped_column(
+        ForeignKey("public.invoice_types.key"))  # TIPOFACTURA
+    invoice_number: Mapped[Optional[str]] = mapped_column(
+        String(20))  # FACTURAIMPO/FACTURAEXPO/FACTURAREMISION
+    project_number: Mapped[Optional[str]] = mapped_column(
+        String(14))  # NUMPROYECTO
+    purchase_order: Mapped[Optional[str]] = mapped_column(
+        String(50))  # ORDENCOMPRA
+    related_doc_id: Mapped[Optional[int]] = mapped_column(
+        Integer)  # IDRELDOC (Para Rectificaciones)
+
     # Dates
-    invoice_date: Mapped[Optional[datetime]] = mapped_column(Date) # FECHAFACTURA
-    capture_date: Mapped[datetime] = mapped_column(TIMESTAMP(timezone=False), default=datetime.now) # FECHACAPTURA + HORAACTUAL
-    
+    invoice_date: Mapped[Optional[datetime]
+                         ] = mapped_column(Date)  # FECHAFACTURA
+    capture_date: Mapped[datetime] = mapped_column(
+        TIMESTAMP(timezone=False), default=datetime.now)  # FECHACAPTURA + HORAACTUAL
+
     # Status & Control
-    status: Mapped[Optional[str]] = mapped_column(String(5)) # ESTATUS
-    traffic_light_status: Mapped[Optional[str]] = mapped_column(String(50)) # SEMAFORO / SEMAFOROEXPO/IMPO
-    process_log: Mapped[Optional[str]] = mapped_column(String(300)) # COMOFUEPROCESADA **<-- AÑADIDO**
-    comments: Mapped[Optional[str]] = mapped_column(Text) # OBSERVACIONE + OBSERVACIONI + COMENTARIOSESTATUS
-    
+    status: Mapped[Optional[str]] = mapped_column(String(5))  # ESTATUS
+    traffic_light_status: Mapped[Optional[str]] = mapped_column(
+        String(50))  # SEMAFORO / SEMAFOROEXPO/IMPO
+    process_log: Mapped[Optional[str]] = mapped_column(
+        String(300))  # COMOFUEPROCESADA **<-- AÑADIDO**
+    # OBSERVACIONE + OBSERVACIONI + COMENTARIOSESTATUS
+    comments: Mapped[Optional[str]] = mapped_column(Text)
+
     # Digital Archive Links
-    cfdi_uuid: Mapped[Optional[str]] = mapped_column(String(100)) # CFDIUUID
-    path_pdf: Mapped[Optional[str]] = mapped_column(String(500)) # CFDIPATHPDF **<-- AÑADIDO**
-    path_xml: Mapped[Optional[str]] = mapped_column(String(500)) # CFDIPATHXML **<-- AÑADIDO**
-    
+    cfdi_uuid: Mapped[Optional[str]] = mapped_column(String(100))  # CFDIUUID
+    path_pdf: Mapped[Optional[str]] = mapped_column(
+        String(500))  # CFDIPATHPDF **<-- AÑADIDO**
+    path_xml: Mapped[Optional[str]] = mapped_column(
+        String(500))  # CFDIPATHXML **<-- AÑADIDO**
+
     # Relationships (Para navegacion ORM)
-    compliance_mx: Mapped["InvoiceComplianceMx"] = relationship(back_populates="header", cascade="all, delete-orphan")
-    financials: Mapped["InvoiceFinancials"] = relationship(back_populates="header", cascade="all, delete-orphan")
-    details: Mapped[List["InvoiceSalesDetails"]] = relationship(back_populates="header", cascade="all, delete-orphan")
-    collections: Mapped[List["InvoiceCollections"]] = relationship(back_populates="header", cascade="all, delete-orphan")
-    logistics: Mapped[List["InvoiceLogistics"]] = relationship(back_populates="header", cascade="all, delete-orphan")
+    compliance_mx: Mapped["InvoiceComplianceMx"] = relationship(
+        back_populates="header", cascade="all, delete-orphan")
+    financials: Mapped["InvoiceFinancials"] = relationship(
+        back_populates="header", cascade="all, delete-orphan")
+    details: Mapped[List["InvoiceSalesDetails"]] = relationship(
+        back_populates="header", cascade="all, delete-orphan")
+    collections: Mapped[List["InvoiceCollections"]] = relationship(
+        back_populates="header", cascade="all, delete-orphan")
+    logistics: Mapped[List["InvoiceLogistics"]] = relationship(
+        back_populates="header", cascade="all, delete-orphan")
 
 
 # --- 2. Compliance MX (invoice_compliance_mx) ---
@@ -48,27 +75,36 @@ class InvoiceComplianceMx(Base, TenantScopedMixin, TimestampMixin):
     __tablename__ = "invoice_compliance_mx"
     __tableargs__ = {'schema': 'a76'}
 
-    invoice_id: Mapped[int] = mapped_column(ForeignKey("invoice_header.id"), primary_key=True)
-    
+    invoice_id: Mapped[int] = mapped_column(
+        ForeignKey("invoice_header.id"), primary_key=True)
+
     # Core Customs Data
-    pedimento: Mapped[Optional[str]] = mapped_column(String(19)) # PEDIMENTO/PEDIMENTOIMPO/EXPO
-    pedimento_code: Mapped[Optional[str]] = mapped_column(String(5)) # PEDIMENTOR1, K1
+    pedimento: Mapped[Optional[str]] = mapped_column(
+        String(19))  # PEDIMENTO/PEDIMENTOIMPO/EXPO
+    pedimento_code: Mapped[Optional[str]] = mapped_column(
+        String(5))  # PEDIMENTOR1, K1
     remesa: Mapped[Optional[int]] = mapped_column(Integer)
-    aduana: Mapped[Optional[str]] = mapped_column(String(5)) # ADUANA_CRUCE
-    customs_agent: Mapped[Optional[str]] = mapped_column(String(10)) # AADUANAL
-    
+    aduana: Mapped[Optional[str]] = mapped_column(String(5))  # ADUANA_CRUCE
+    customs_agent: Mapped[Optional[str]] = mapped_column(
+        String(10))  # AADUANAL
+
     # Flags & Specific Regimes
-    is_mixed: Mapped[Optional[str]] = mapped_column(String(2)) # ESMIXTO **<-- AÑADIDO**
-    waste_type: Mapped[Optional[str]] = mapped_column(String(1)) # TIPODESPERDICIO **<-- AÑADIDO**
-    appendix_17: Mapped[Optional[int]] = mapped_column(Integer) # APENDICE17
-    
+    is_mixed: Mapped[Optional[str]] = mapped_column(
+        String(2))  # ESMIXTO **<-- AÑADIDO**
+    waste_type: Mapped[Optional[str]] = mapped_column(
+        String(1))  # TIPODESPERDICIO **<-- AÑADIDO**
+    appendix_17: Mapped[Optional[int]] = mapped_column(Integer)  # APENDICE17
+
     # VUCEM / Digital
-    edocument: Mapped[Optional[str]] = mapped_column(String(50)) # EDOCUMENT
-    electronic_signature: Mapped[Optional[str]] = mapped_column(String(999)) # FIRMAELECTRONICA
-    sem_id: Mapped[Optional[int]] = mapped_column(Integer) # SEM (de SFacEntradaSM/SFacSalidaSM)
-    
+    edocument: Mapped[Optional[str]] = mapped_column(String(50))  # EDOCUMENT
+    electronic_signature: Mapped[Optional[str]] = mapped_column(
+        String(999))  # FIRMAELECTRONICA
+    sem_id: Mapped[Optional[int]] = mapped_column(
+        Integer)  # SEM (de SFacEntradaSM/SFacSalidaSM)
+
     # Relationship
-    header: Mapped["InvoiceHeader"] = relationship(back_populates="compliance_mx")
+    header: Mapped["InvoiceHeader"] = relationship(
+        back_populates="compliance_mx")
 
 
 # --- 3. Financials (invoice_financials) ---
@@ -76,28 +112,40 @@ class InvoiceFinancials(Base, TenantScopedMixin, TimestampMixin):
     __tablename__ = "invoice_financials"
     __tableargs__ = {'schema': 'a76'}
 
-    invoice_id: Mapped[int] = mapped_column(ForeignKey("invoice_header.id"), primary_key=True)
-    
-    currency: Mapped[Optional[str]] = mapped_column(String(3)) # CLAVEMONEDA
-    exchange_rate: Mapped[Optional[float]] = mapped_column(Numeric(13, 6)) # TIPOCAMBIO
-    
+    invoice_id: Mapped[int] = mapped_column(
+        ForeignKey("invoice_header.id"), primary_key=True)
+
+    currency: Mapped[Optional[str]] = mapped_column(String(3))  # CLAVEMONEDA
+    exchange_rate: Mapped[Optional[float]] = mapped_column(
+        Numeric(13, 6))  # TIPOCAMBIO
+
     # Merchandise Values
-    value_mn: Mapped[Optional[float]] = mapped_column(Numeric(23, 8), default=0) # VALORIMPOMN/EXPOMN
-    value_me: Mapped[Optional[float]] = mapped_column(Numeric(23, 8), default=0)
-    customs_value_mn: Mapped[Optional[float]] = mapped_column(Numeric(23, 8), default=0) # VALORADUANASMN **<-- AÑADIDO**
-    
+    value_mn: Mapped[Optional[float]] = mapped_column(
+        Numeric(23, 8), default=0)  # VALORIMPOMN/EXPOMN
+    value_me: Mapped[Optional[float]] = mapped_column(
+        Numeric(23, 8), default=0)
+    customs_value_mn: Mapped[Optional[float]] = mapped_column(
+        Numeric(23, 8), default=0)  # VALORADUANASMN **<-- AÑADIDO**
+
     # Costs & Taxes
-    freight: Mapped[Optional[float]] = mapped_column(Numeric(19, 8), default=0) # FLETE
-    insurance: Mapped[Optional[float]] = mapped_column(Numeric(19, 8), default=0) # VALSEGUROS/SEGUROS
-    iva_mn: Mapped[Optional[float]] = mapped_column(Numeric(23, 8), default=0) # IVAEXPOMN / VALORIVAMN
-    iva_factor: Mapped[Optional[float]] = mapped_column(Numeric(17, 4)) # FACTORIVA
-    
+    freight: Mapped[Optional[float]] = mapped_column(
+        Numeric(19, 8), default=0)  # FLETE
+    insurance: Mapped[Optional[float]] = mapped_column(
+        Numeric(19, 8), default=0)  # VALSEGUROS/SEGUROS
+    iva_mn: Mapped[Optional[float]] = mapped_column(
+        Numeric(23, 8), default=0)  # IVAEXPOMN / VALORIVAMN
+    iva_factor: Mapped[Optional[float]] = mapped_column(
+        Numeric(17, 4))  # FACTORIVA
+
     # Weights & Quantities
-    total_quantity: Mapped[Optional[float]] = mapped_column(Numeric(19, 8)) # CANTEXPO / CANTIMPO
-    gross_weight: Mapped[Optional[float]] = mapped_column(Numeric(19, 8)) # PESOBRUTO **<-- AÑADIDO**
-    net_weight: Mapped[Optional[float]] = mapped_column(Numeric(19, 8)) # PESONETO **<-- AÑADIDO**
-    bundle_count: Mapped[Optional[int]] = mapped_column(Integer) # CANTBULTOS
-    
+    total_quantity: Mapped[Optional[float]] = mapped_column(
+        Numeric(19, 8))  # CANTEXPO / CANTIMPO
+    gross_weight: Mapped[Optional[float]] = mapped_column(
+        Numeric(19, 8))  # PESOBRUTO **<-- AÑADIDO**
+    net_weight: Mapped[Optional[float]] = mapped_column(
+        Numeric(19, 8))  # PESONETO **<-- AÑADIDO**
+    bundle_count: Mapped[Optional[int]] = mapped_column(Integer)  # CANTBULTOS
+
     # Relationship
     header: Mapped["InvoiceHeader"] = relationship(back_populates="financials")
 
@@ -107,25 +155,33 @@ class InvoiceLogistics(Base, TenantScopedMixin, TimestampMixin):
     __tablename__ = "invoice_logistics"
     __tableargs__ = {'schema': 'a76'}
 
-    logistics_id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
+    logistics_id: Mapped[int] = mapped_column(
+        BigInteger, primary_key=True, autoincrement=True)
     invoice_id: Mapped[int] = mapped_column(ForeignKey("invoice_header.id"))
-    
+
     # Carrier Info
-    carrier_id: Mapped[Optional[str]] = mapped_column(String(10)) # TRANSPORTISTA
-    transport_mode: Mapped[Optional[str]] = mapped_column(String(15)) # TRANSPORTE
-    driver_name: Mapped[Optional[str]] = mapped_column(String(80)) # CONDUCTOR
-    is_rail: Mapped[Optional[str]] = mapped_column(String(2)) # ESFERROCARRIL
-    rail_id: Mapped[Optional[str]] = mapped_column(String(31)) # IDFERRORCARRIL
-    
+    carrier_id: Mapped[Optional[str]] = mapped_column(
+        String(10))  # TRANSPORTISTA
+    transport_mode: Mapped[Optional[str]] = mapped_column(
+        String(15))  # TRANSPORTE
+    driver_name: Mapped[Optional[str]] = mapped_column(String(80))  # CONDUCTOR
+    is_rail: Mapped[Optional[str]] = mapped_column(String(2))  # ESFERROCARRIL
+    rail_id: Mapped[Optional[str]] = mapped_column(
+        String(31))  # IDFERRORCARRIL
+
     # Vehicle & Tracking
-    vehicle_num: Mapped[Optional[str]] = mapped_column(String(20)) # NUMVEHICULO / NUMTRAILER
-    license_plate: Mapped[Optional[str]] = mapped_column(String(20)) # NUMTRASPORTE
-    seal_number: Mapped[Optional[str]] = mapped_column(String(15)) # PRECINTO
-    guide_number: Mapped[Optional[str]] = mapped_column(String(20)) # NUMEROGUIA
-    
+    vehicle_num: Mapped[Optional[str]] = mapped_column(
+        String(20))  # NUMVEHICULO / NUMTRAILER
+    license_plate: Mapped[Optional[str]] = mapped_column(
+        String(20))  # NUMTRASPORTE
+    seal_number: Mapped[Optional[str]] = mapped_column(String(15))  # PRECINTO
+    guide_number: Mapped[Optional[str]] = mapped_column(
+        String(20))  # NUMEROGUIA
+
     # Logistics Dates
-    entry_exit_date: Mapped[Optional[datetime]] = mapped_column(Date) # FECHAENTRADA / FECHAENVIO
-    
+    entry_exit_date: Mapped[Optional[datetime]] = mapped_column(
+        Date)  # FECHAENTRADA / FECHAENVIO
+
     # Relationship
     header: Mapped["InvoiceHeader"] = relationship(back_populates="logistics")
 
@@ -135,17 +191,22 @@ class InvoiceSalesDetails(Base, TenantScopedMixin, TimestampMixin):
     __tablename__ = "invoice_sales_details"
     __tableargs__ = {'schema': 'a76'}
 
-    detail_id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
+    detail_id: Mapped[int] = mapped_column(
+        BigInteger, primary_key=True, autoincrement=True)
     invoice_id: Mapped[int] = mapped_column(ForeignKey("invoice_header.id"))
-    
-    line_number: Mapped[int] = mapped_column(Integer) # LINEA
-    sales_order: Mapped[Optional[str]] = mapped_column(String(20)) # ORDENVENTA
-    
+
+    line_number: Mapped[int] = mapped_column(Integer)  # LINEA
+    sales_order: Mapped[Optional[str]] = mapped_column(
+        String(20))  # ORDENVENTA
+
     # Specific Custom Fields
-    colors_description: Mapped[Optional[str]] = mapped_column(String(49)) # COLORES
-    square_color_code: Mapped[Optional[str]] = mapped_column(String(1)) # COLORCUADRITO
-    line_bundles: Mapped[Optional[int]] = mapped_column(Integer) # CANTBULTOS (de la linea)
-    
+    colors_description: Mapped[Optional[str]
+                               ] = mapped_column(String(49))  # COLORES
+    square_color_code: Mapped[Optional[str]] = mapped_column(
+        String(1))  # COLORCUADRITO
+    line_bundles: Mapped[Optional[int]] = mapped_column(
+        Integer)  # CANTBULTOS (de la linea)
+
     # Relationship
     header: Mapped["InvoiceHeader"] = relationship(back_populates="details")
 
@@ -155,15 +216,19 @@ class InvoiceCollections(Base, TenantScopedMixin, TimestampMixin):
     __tablename__ = "invoice_collections"
     __tableargs__ = {'schema': 'a76'}
 
-    collection_id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
+    collection_id: Mapped[int] = mapped_column(
+        BigInteger, primary_key=True, autoincrement=True)
     invoice_id: Mapped[int] = mapped_column(ForeignKey("invoice_header.id"))
-    
-    concept: Mapped[Optional[str]] = mapped_column(String(100)) # CONCEPTO
-    is_collected: Mapped[Optional[int]] = mapped_column(Integer) # COBRADO
-    collection_date: Mapped[Optional[datetime]] = mapped_column(Date) # FECHACOBRANZA
-    amount: Mapped[Optional[float]] = mapped_column(Numeric(23, 8)) # VALOR
-    
-    collector_user: Mapped[Optional[str]] = mapped_column(String(20)) # FACTCOBRADOR
-    
+
+    concept: Mapped[Optional[str]] = mapped_column(String(100))  # CONCEPTO
+    is_collected: Mapped[Optional[int]] = mapped_column(Integer)  # COBRADO
+    collection_date: Mapped[Optional[datetime]
+                            ] = mapped_column(Date)  # FECHACOBRANZA
+    amount: Mapped[Optional[float]] = mapped_column(Numeric(23, 8))  # VALOR
+
+    collector_user: Mapped[Optional[str]] = mapped_column(
+        String(20))  # FACTCOBRADOR
+
     # Relationship
-    header: Mapped["InvoiceHeader"] = relationship(back_populates="collections")
\ No newline at end of file
+    header: Mapped["InvoiceHeader"] = relationship(
+        back_populates="collections")
diff --git a/backend/api/v1/modules/a76/invoices/schemas.py b/backend/api/v1/modules/a76/invoices/schemas.py
index a9b01b3b..70280e46 100644
--- a/backend/api/v1/modules/a76/invoices/schemas.py
+++ b/backend/api/v1/modules/a76/invoices/schemas.py
@@ -2,38 +2,27 @@ from typing import Optional, List
 from datetime import datetime, date
 from decimal import Decimal
 from pydantic import BaseModel, Field
+from .models import OperationType
+
 
 
 # --- Base Schemas ---
-
 class InvoiceHeaderBase(BaseModel):
     """Base fields for Invoice Header"""
-    legacy_id: Optional[int] = Field(
-        None, description="Legacy consecutive ID (CONSECUTIVO)")
-    operation_type: Optional[str] = Field(
-        None, max_length=20, description="Operation type: IMP/EXP/SM")
-    invoice_number: Optional[str] = Field(
-        None, max_length=20, description="Invoice number")
-    project_number: Optional[str] = Field(
-        None, max_length=14, description="Project number")
-    purchase_order: Optional[str] = Field(
-        None, max_length=50, description="Purchase order")
-    related_doc_id: Optional[int] = Field(
-        None, description="Related document ID for rectifications")
+    operation_type: Optional[OperationType] = Field(None, max_length=20, description="Operation type: imp/exp")
+    invoice_type: Optional[str] = Field(None, max_length=5, description="Invoice type key")
+    invoice_number: Optional[str] = Field(None, max_length=20, description="Invoice number")
+    project_number: Optional[str] = Field(None, max_length=14, description="Project number")
+    purchase_order: Optional[str] = Field(None, max_length=50, description="Purchase order")
+    related_doc_id: Optional[int] = Field(None, description="Related document ID for rectifications")
     invoice_date: Optional[date] = Field(None, description="Invoice date")
     status: Optional[str] = Field(None, max_length=5, description="Status")
-    traffic_light_status: Optional[str] = Field(
-        None, max_length=50, description="Traffic light status (SEMAFORO)")
-    process_log: Optional[str] = Field(
-        None, max_length=300, description="Processing log")
-    comments: Optional[str] = Field(
-        None, description="Comments and observations")
-    cfdi_uuid: Optional[str] = Field(
-        None, max_length=100, description="CFDI UUID")
-    path_pdf: Optional[str] = Field(
-        None, max_length=500, description="Path to PDF file")
-    path_xml: Optional[str] = Field(
-        None, max_length=500, description="Path to XML file")
+    traffic_light_status: Optional[str] = Field(None, max_length=50, description="Traffic light status (SEMAFORO)")
+    process_log: Optional[str] = Field(None, max_length=300, description="Processing log")
+    comments: Optional[str] = Field(None, description="Comments and observations")
+    cfdi_uuid: Optional[str] = Field(None, max_length=100, description="CFDI UUID")
+    path_pdf: Optional[str] = Field(None, max_length=500, description="Path to PDF file")
+    path_xml: Optional[str] = Field(None, max_length=500, description="Path to XML file")
 
 
 class InvoiceComplianceMxBase(BaseModel):
diff --git a/backend/api/v1/modules/public/reference_data/invoice_types/models.py b/backend/api/v1/modules/public/reference_data/invoice_types/models.py
index 8b3671f0..792cda91 100644
--- a/backend/api/v1/modules/public/reference_data/invoice_types/models.py
+++ b/backend/api/v1/modules/public/reference_data/invoice_types/models.py
@@ -10,15 +10,11 @@ class InvoiceType(Base):
         {"schema": "public", "extend_existing": True},  # opcional
     )
 
-    key: Mapped[str] = mapped_column(
-        String(5), nullable=False
-    )  # clave del tipo de factura
-    description: Mapped[str] = mapped_column(
-        String(50), nullable=False
-    )  # descripción oficial (en español)
-    # observación o comentario adicional
-    note: Mapped[str] = mapped_column(String(500))
-    type: Mapped[str] = mapped_column(String(15))  # tipo
+    key: Mapped[str] = mapped_column(String(5), nullable=False)  # clave del tipo de factura
+    description: Mapped[str] = mapped_column(String(50), nullable=False)  # descripción oficial (en español)    
+    note: Mapped[str] = mapped_column(String(500))# observación o comentario adicional    
+    type: Mapped[str] = mapped_column(String(15))# tipo (MATERIAL, fixed asset, both)
+    operation: Mapped[str] = mapped_column(String(5))  # operación (imp, exp, both)
 
     def __repr__(self):
-        return f"<InvoiceType(key={self.key}, description={self.description}, origin_type={self.origin_type})>"
+        return f"<InvoiceType(key={self.key}, description={self.description}, type={self.type}, operation={self.operation})>"
diff --git a/backend/api/v1/modules/public/reference_data/invoice_types/seed.py b/backend/api/v1/modules/public/reference_data/invoice_types/seed.py
index dd8f0fcb..235e726f 100644
--- a/backend/api/v1/modules/public/reference_data/invoice_types/seed.py
+++ b/backend/api/v1/modules/public/reference_data/invoice_types/seed.py
@@ -1,38 +1,76 @@
 seed = [
-    ("DONAC", "DONACION", "", "AMBOS"),
-    ("EXDEF", "EXPORTACION DEFINITIVA", "", "MATERIAL"),
+    # === TIPOS DE IMPORTACION ===
+    (
+        "TEMP",
+        "IMPORTACION TEMPORAL",
+        "IMPORTACION TEMPORAL DE MATERIA PRIMA, COMPONENTES O MATERIALES PARA SER PROCESADOS Y POSTERIORMENTE EXPORTADOS.",
+        "material",
+        "imp",
+    ),
+    (
+        "DEF",
+        "IMPORTACION DEFINITIVA",
+        "IMPORTACION DEFINITIVA PARA NACIONALIZACION DE MERCANCIA QUE PERMANECE EN TERRITORIO NACIONAL.",
+        "material",
+        "imp",
+    ),
+    (
+        "MEX",
+        "COMPRAS MEXICANAS",
+        "IMPORTACION DE MERCANCIA NACIONAL ADQUIRIDA DE PROVEEDORES MEXICANOS PARA INCORPORAR A PROCESO PRODUCTIVO.",
+        "material",
+        "imp",
+    ),
+    (
+        "CR",
+        "CAMBIO DE REGIMEN",
+        "IMPORTACION POR CAMBIO DE REGIMEN DE MERCANCIA TEMPORAL QUE SE NACIONALIZA O RETORNA.",
+        "material",
+        "imp",
+    ),
+
+    # === TIPOS DE EXPORTACION ===
+    ("DONAC", "DONACION", "", "both", "exp"),
+    ("EXDEF", "EXPORTACION DEFINITIVA", "", "material", "exp"),
     (
         "MATDE",
         "MATERIA PRIMA O MATERIAL DEVUELTO",
         "ESTE PROCESO CONSISTE EN SOLO DESCARGAR LAS PARTES DADAS DE ALTA EN MATERIALES QUE SON RETORNADAS SIN NINGUNA MODIFICACION (A1)",
-        "MATERIAL",
+        "material",
+        "exp",
     ),
     (
         "NODES",
         "NO HACE DESCARGA",
         "ESTE PROCESO DE ACTUALIZACION CONSISTE EN EXPORTAR UNA MERCANCIA Y NO DESCARGAR, POR LO TANTO NO EXISTE REPORTE DE DESCARGAS Y NO AFECTA SALDOS.",
-        "AMBOS",
+        "both",
+        "exp",
     ),
     (
         "PTERM",
         "PRODUCTO TERMINADO Y VIRTUALES",
         "EL PRODUCTO TERMINADO Y VIRTUALES DESCARGARAN:  1) APARTIR DE LOS COMPONENTES DE CADA PRODUCTO TERMINADO REGISTRADO EN LAS PARTIDAS DE EXPORTACION.   2) POR PARTE, CON LAS OPCIONES DE PODER DESCARGAR POR SUSTITUTO Y POR CLASE EN CASO DE INSUFICIENCIAS DEL COMPONENTE.",
-        "MATERIAL",
+        "material",
+        "exp",
     ),
     (
         "REPAR",
         "REPARACION",
         "PROCESO QUE CONSISTE EN DOS ETAPAS: 1) DESCARGA EL PRODUCTO DE REPARACION QUE SE IMPORTO PARA REPARA, 2) DESCARGA EL LISTADO DE COMPONENTES QUE SE AGREGO AL PRODUCTO DE REPARACION",
-        "MATERIAL",
+        "material",
+        "exp",
     ),
-    ("SCRAP", "SCRAP", "", "AMBOS"),
+    ("SCRAP", "SCRAP", "", "both", "exp"),
     (
         "VEMEX",
         "VENTAS EN MEXICO",
         "ESTE PROCESO  CONSISTE EN LA VENTA EN EL MERCADO NACIONAL DE LOS PRODUCTOS.",
-        "AMBOS",
+        "both",
+        "exp",
     ),
-    ("VIRTU", "VIRTUALES", "", "MATERIAL"),
-    ("AFIJO", "ACTIVO FIJO", "", "ACTIVO FIJO"),
-    ("REEXP", "REEXPEDICION", "", "ACTIVO FIJO"),
+    ("VIRTU", "VIRTUALES", "", "material", "exp"),
+
+    # === ACTIVOS FIJOS (AMBAS OPERACIONES) ===
+    ("AFIJO", "ACTIVO FIJO", "", "fixed asset", "both"),
+    ("REEXP", "REEXPEDICION", "", "fixed asset", "both"),
 ]