feauture/catalogo-clases-inventario-UME

backend/alembic/versions/c8d9e0f1a2b3_add_stock_unit_of_measure_to_classes.py

@@ -0,0 +1,43 @@
+"""add stock_unit_of_measure to classes
+
+Revision ID: c8d9e0f1a2b3
+Revises: b3c4d5e6f7a8
+Create Date: 2026-06-02 12:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "c8d9e0f1a2b3"
+down_revision: Union[str, None] = "b3c4d5e6f7a8"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "classes",
+        sa.Column("stock_unit_of_measure", sa.String(length=5), nullable=True),
+        schema="a76",
+    )
+    op.create_foreign_key(
+        "fk_classes_stock_uom",
+        "classes",
+        "units_of_measure",
+        ["stock_unit_of_measure", "tenant_id", "company_id"],
+        ["code", "tenant_id", "company_id"],
+        source_schema="a76",
+        referent_schema="a76",
+    )
+
+
+def downgrade() -> None:
+    op.drop_constraint(
+        "fk_classes_stock_uom",
+        "classes",
+        schema="a76",
+        type_="foreignkey",
+    )
+    op.drop_column("classes", "stock_unit_of_measure", schema="a76")

backend/api/v1/modules/a76/classes/dto.py

@@ -28,6 +28,11 @@ class ClassCreateDTO(BaseModel):
     unit_of_measure: str = Field(
         ..., max_length=5, description="Unit of measure - U.M. comercial (required)"
     )
+    stock_unit_of_measure: Optional[str] = Field(
+        None,
+        max_length=5,
+        description="UM Existencia - solo SCAII/inventory (UMEXISTENCIA)",
+    )
     fraction: str = Field(
         ..., max_length=20, description="Mexican tariff fraction (required)"
     )
@@ -111,6 +116,11 @@ class ClassUpdateDTO(BaseModel):
     unit_of_measure: Optional[str] = Field(
         None, max_length=5, description="Unit of measure (homologated UNIMEDIDA)"
     )
+    stock_unit_of_measure: Optional[str] = Field(
+        None,
+        max_length=5,
+        description="UM Existencia - solo SCAII/inventory (UMEXISTENCIA)",
+    )
     fraction: Optional[str] = Field(
         None, max_length=20, description="Mexican tariff fraction"
     )
@@ -148,6 +158,7 @@ class ClassResponseDTO(BaseModel):
     description_en: Optional[str] = None
     material_key: Optional[str] = None
     unit_of_measure: Optional[str] = None
+    stock_unit_of_measure: Optional[str] = None
     fraction: Optional[str] = None
     us_fraction: Optional[str] = None
     sub_key: Optional[str] = None
@@ -230,6 +241,7 @@ class ClassWithFADataResponse(BaseModel):
     description_en: Optional[str] = None
     material_key: Optional[str] = None
     unit_of_measure: Optional[str] = None
+    stock_unit_of_measure: Optional[str] = None
     fraction: Optional[str] = None
     us_fraction: Optional[str] = None
     sub_key: Optional[str] = None

backend/api/v1/modules/a76/classes/models.py

@@ -42,6 +42,12 @@ class Class(Base, TenantScopedMixin, TimestampMixin):
             ["a76.units_of_measure.code", "a76.units_of_measure.tenant_id",
                 "a76.units_of_measure.company_id"],
         ),
+        ForeignKeyConstraint(
+            ["stock_unit_of_measure", "tenant_id", "company_id"],
+            ["a76.units_of_measure.code", "a76.units_of_measure.tenant_id",
+                "a76.units_of_measure.company_id"],
+            name="fk_classes_stock_uom",
+        ),
         UniqueConstraint(
             "tenant_id",
             "company_id",
@@ -69,6 +75,9 @@ class Class(Base, TenantScopedMixin, TimestampMixin):
     unit_of_measure: Mapped[Optional[str]] = mapped_column(
         String(5)
     )  # UNIMED - homologated from UNIMEDIDA
+    stock_unit_of_measure: Mapped[Optional[str]] = mapped_column(
+        String(5)
+    )  # UMEXISTENCIA - UM Existencia (SCAII/inventory)
 
     # Tariff fractions
     fraction: Mapped[Optional[str]] = mapped_column(String(20))  # FRACCION
@@ -97,7 +106,11 @@ class Class(Base, TenantScopedMixin, TimestampMixin):
     )
     unit_of_measure_info: Mapped[Optional["UnitOfMeasure"]] = relationship(
         foreign_keys=[unit_of_measure]
-    )        
+    )
+    stock_unit_of_measure_info: Mapped[Optional["UnitOfMeasure"]] = relationship(
+        foreign_keys=[stock_unit_of_measure],
+        viewonly=True,
+    )
 
     # Inverse relationship with GParts that have this class
     parts: Mapped[list["Part"]] = relationship(

backend/api/v1/modules/a76/classes/service.py

@@ -25,6 +25,51 @@ from .models import Class
 logger = logging.getLogger(__name__)
 
 
+def _validate_stock_uom_conversion(
+    db: Session,
+    tenant_id: int,
+    company_id: int,
+    system: str,
+    stock_unit_of_measure: Optional[str],
+    unit_of_measure: Optional[str],
+) -> None:
+    """SCAII: si UM Existencia ≠ UM Comercial, debe existir conversión en catálogo."""
+    if system != "inventory":
+        return
+
+    stock_um = (stock_unit_of_measure or "").strip().upper()
+    commercial_um = (unit_of_measure or "").strip().upper()
+    if not stock_um or not commercial_um or stock_um == commercial_um:
+        return
+
+    from api.v1.modules.a76.general_catalogs.unit_conversions.models import (
+        UnitConversion,
+    )
+
+    conversion_exists = (
+        db.query(UnitConversion)
+        .filter(
+            UnitConversion.tenant_id == tenant_id,
+            UnitConversion.company_id == company_id,
+            or_(
+                (UnitConversion.from_unit_code == stock_um)
+                & (UnitConversion.to_unit_code == commercial_um),
+                (UnitConversion.from_unit_code == commercial_um)
+                & (UnitConversion.to_unit_code == stock_um),
+            ),
+        )
+        .first()
+    )
+    if not conversion_exists:
+        raise HTTPException(
+            status_code=422,
+            detail=(
+                f"No existe un factor de conversión para '{stock_um}' ↔ '{commercial_um}'. "
+                "Configúrelo primero en el catálogo de Conversiones de UM."
+            ),
+        )
+
+
 class ClassService:
     """Servicio para gestión de clases SCAII y SCAF"""
 
@@ -202,6 +247,7 @@ class ClassService:
                 "description_en": base_class.description_en,
                 "material_key": base_class.material_key,
                 "unit_of_measure": base_class.unit_of_measure,
+                "stock_unit_of_measure": base_class.stock_unit_of_measure,
                 "fraction": base_class.fraction,
                 "us_fraction": base_class.us_fraction,
                 "sub_key": base_class.sub_key,
@@ -273,7 +319,16 @@ class ClassService:
                 status_code=400,
                 detail=f"Material type '{data_dict['material_key']}' does not exist"
             )
-        
+
+        _validate_stock_uom_conversion(
+            db,
+            tenant_id,
+            company_id,
+            data_dict.get("system", "fixed_asset"),
+            data_dict.get("stock_unit_of_measure"),
+            data_dict.get("unit_of_measure"),
+        )
+
         class_obj = Class(**data_dict)
         class_obj.tenant_id = tenant_id
         class_obj.company_id = company_id
@@ -306,7 +361,23 @@ class ClassService:
             return None
 
         update_data = class_data.model_dump(exclude_unset=True)
-        
+
+        effective_system = update_data.get("system", class_obj.system)
+        effective_stock_um = update_data.get(
+            "stock_unit_of_measure", class_obj.stock_unit_of_measure
+        )
+        effective_commercial_um = update_data.get(
+            "unit_of_measure", class_obj.unit_of_measure
+        )
+        _validate_stock_uom_conversion(
+            db,
+            tenant_id,
+            company_id,
+            effective_system,
+            effective_stock_um,
+            effective_commercial_um,
+        )
+
         # Validate material_key exists if provided
         if "material_key" in update_data and update_data["material_key"]:
             from api.v1.modules.public.reference_data.material_types.models import MaterialType
@@ -438,7 +509,8 @@ class ClassService:
         # Extract base class fields
         base_fields = {
             "class_code", "description_es", "description_en",
-            "material_key", "unit_of_measure", "fraction", "us_fraction",
+            "material_key", "unit_of_measure", "stock_unit_of_measure",
+            "fraction", "us_fraction",
             "sub_key", "physical_review", "iva_exempt_fraction", "system"
         }
         base_data = {k: v for k, v in class_data.model_dump().items() if k in base_fields}
@@ -477,6 +549,7 @@ class ClassService:
                 "description_en": base_class.description_en,
                 "material_key": base_class.material_key,
                 "unit_of_measure": base_class.unit_of_measure,
+                "stock_unit_of_measure": base_class.stock_unit_of_measure,
                 "fraction": base_class.fraction,
                 "us_fraction": base_class.us_fraction,
                 "sub_key": base_class.sub_key,

frontend/src/lib/api/dashboard/a76/classes.ts

@@ -12,6 +12,7 @@ export interface A76Class {
     description_en: string | null;
     material_key: string | null;
     unit_of_measure: string;
+    stock_unit_of_measure?: string | null;
     fraction: string;
     us_fraction: string;
     sub_key: string;
@@ -31,6 +32,7 @@ export interface A76ClassCreate {
     description_en?: string | null;
     material_key?: string | null;
     unit_of_measure?: string | null;
+    stock_unit_of_measure?: string | null;
     fraction?: string | null;
     us_fraction?: string | null;
     sub_key?: string | null;

frontend/src/lib/components/dashboard/goods/classes/columns.ts

@@ -8,8 +8,8 @@ import {
 	normalizeMexTariffDigitsStored
 } from "$lib/utils/mexican-tariff-fraction";
 
-export function createColumns(): ColumnDef<A76Class>[] {
+export function createColumns(options?: { includeStockUom?: boolean }): ColumnDef<A76Class>[] {
-	return [
+	const baseColumns: ColumnDef<A76Class>[] = [
 		{
 			id: "select",
 			header: ({ table }) => {
@@ -129,6 +129,24 @@ export function createColumns(): ColumnDef<A76Class>[] {
 				return renderSnippet(umSnippet, { um: row.original.unit_of_measure });
 			}
 		},
+	];
+
+	const stockUomColumn: ColumnDef<A76Class> = {
+		accessorKey: "stock_unit_of_measure",
+		header: "U.M. Existencia",
+		enableSorting: true,
+		cell: ({ row }) => {
+			const umSnippet = createRawSnippet<[{ um: string | null }]>((getProps) => {
+				const { um } = getProps();
+				return {
+					render: () => `<div class="text-muted-foreground">${um || '—'}</div>`
+				};
+			});
+			return renderSnippet(umSnippet, { um: row.original.stock_unit_of_measure ?? null });
+		}
+	};
+
+	const tailColumns: ColumnDef<A76Class>[] = [
 		{
 			accessorKey: "fraction",
 			header: m['common.col_fraction'](),
@@ -162,6 +180,11 @@ export function createColumns(): ColumnDef<A76Class>[] {
 			}
 		}
 	];
+
+	if (options?.includeStockUom) {
+		return [...baseColumns, stockUomColumn, ...tailColumns];
+	}
+	return [...baseColumns, ...tailColumns];
 }
 
 export const columns = createColumns();

frontend/src/lib/components/dashboard/goods/classes/forms/FixedAssetClassForm.svelte

@@ -10,6 +10,7 @@
 		type MaterialType
 	} from '$lib/api/dashboard/reference_data/material_types';
 	import { unitsOfMeasureApi } from '$lib/api/dashboard/a76/units_of_measure';
+	import { unitConversionsApi } from '$lib/api/dashboard/a76/general_catalogs/unit-conversions';
 	import {
 		getTariffFractions,
 		type TariffFraction
@@ -70,6 +71,7 @@ const isInventoryMode = $derived(mode === 'inventory');
 		description_en: initialData?.description_en || '',
 		material_key: initialData?.material_key || '',
 		unit_of_measure: initialData?.unit_of_measure || '',
+		stock_unit_of_measure: initialData?.stock_unit_of_measure || '',
 		fraction: initialData?.fraction || '',
 		us_fraction: initialData?.us_fraction || '',
 		annual_depreciation_rate: initialData?.annual_depreciation_rate || '',
@@ -86,6 +88,7 @@ const isInventoryMode = $derived(mode === 'inventory');
 		// Campos calculados/display
 		material_description: '',
 		unit_of_measure_description: '',
+		stock_unit_of_measure_description: '',
 		unit_measure_key: '',
 		fraction_umt: '',
 		fraction_uma_key: '',
@@ -115,6 +118,7 @@ const isInventoryMode = $derived(mode === 'inventory');
 			formData.description_en = snap.description_en ?? '';
 			formData.material_key = snap.material_key ?? '';
 			formData.unit_of_measure = snap.unit_of_measure ?? '';
+			formData.stock_unit_of_measure = snap.stock_unit_of_measure ?? '';
 			const mxDigits = normalizeMexTariffDigitsStored(
 				snap.import_tariff_code || snap.fraction || ''
 			);
@@ -155,6 +159,7 @@ const isInventoryMode = $derived(mode === 'inventory');
 			formData.description_en = '';
 			formData.material_key = '';
 			formData.unit_of_measure = '';
+			formData.stock_unit_of_measure = '';
 			formData.fraction = '';
 			formData.us_fraction = '';
 			formData.annual_depreciation_rate = '';
@@ -192,6 +197,9 @@ const isInventoryMode = $derived(mode === 'inventory');
 
 	let showUnitDialog = $state(false);
 	let searchUnit = $state('');
+	let unitPickerTarget = $state<'commercial' | 'stock'>('commercial');
+	let conversionExists = $state<boolean | null>(null);
+	let conversionCheckLoading = $state(false);
 
 	import TariffFractionSelector from '$lib/components/dashboard/goods/modales/TariffFractionSelector.svelte';
 
@@ -265,7 +273,76 @@ const isInventoryMode = $derived(mode === 'inventory');
 			: unitsOfMeasureData
 	);
 
+	const stockUmcDiffer = $derived.by(() => {
+		if (!isInventoryMode) return false;
+		const stock = formData.stock_unit_of_measure?.trim().toUpperCase();
+		const commercial = formData.unit_of_measure?.trim().toUpperCase();
+		return Boolean(stock && commercial && stock !== commercial);
+	});
+
 	// Funciones
+	async function checkUnitConversionPair(): Promise<void> {
+		if (!stockUmcDiffer) {
+			conversionExists = null;
+			return;
+		}
+
+		const stockUm = formData.stock_unit_of_measure.trim().toUpperCase();
+		const commercialUm = formData.unit_of_measure.trim().toUpperCase();
+		const companyId = companyStore.activeCompany?.id;
+		if (!companyId) {
+			conversionExists = false;
+			return;
+		}
+
+		conversionCheckLoading = true;
+		try {
+			const [fwd, rev] = await Promise.all([
+				unitConversionsApi.list(1, 10, companyId, {
+					from_unit_code: stockUm,
+					to_unit_code: commercialUm
+				}),
+				unitConversionsApi.list(1, 10, companyId, {
+					from_unit_code: commercialUm,
+					to_unit_code: stockUm
+				})
+			]);
+			const fwdMatch = fwd.items.some(
+				(c) =>
+					c.from_unit_code.toUpperCase() === stockUm &&
+					c.to_unit_code.toUpperCase() === commercialUm
+			);
+			const revMatch = rev.items.some(
+				(c) =>
+					c.from_unit_code.toUpperCase() === commercialUm &&
+					c.to_unit_code.toUpperCase() === stockUm
+			);
+			conversionExists = fwdMatch || revMatch;
+		} catch {
+			conversionExists = false;
+		} finally {
+			conversionCheckLoading = false;
+		}
+	}
+
+	$effect(() => {
+		if (!isInventoryMode) {
+			conversionExists = null;
+			return;
+		}
+		const stock = formData.stock_unit_of_measure;
+		const commercial = formData.unit_of_measure;
+		if (!stock?.trim() || !commercial?.trim()) {
+			conversionExists = null;
+			return;
+		}
+		if (stock.trim().toUpperCase() === commercial.trim().toUpperCase()) {
+			conversionExists = null;
+			return;
+		}
+		void checkUnitConversionPair();
+	});
+
 	async function loadUnitsOfMeasure() {
 		if (unitsOfMeasureData.length > 0) return;
 		try {
@@ -346,15 +423,31 @@ const isInventoryMode = $derived(mode === 'inventory');
 	}
 
 	async function openUnitOfMeasureSearch() {
+		unitPickerTarget = 'commercial';
+		showUnitDialog = true;
+		searchUnit = '';
+		await loadUnitsOfMeasure();
+	}
+
+	async function openStockUomSearch() {
+		unitPickerTarget = 'stock';
 		showUnitDialog = true;
 		searchUnit = '';
 		await loadUnitsOfMeasure();
 	}
 
 	function selectUnit(unit: UnitOfMeasure) {
-		formData.unit_of_measure = unit.code;
+		if (unitPickerTarget === 'stock') {
-		formData.unit_of_measure_description = unit.description;
+			formData.stock_unit_of_measure = unit.code;
-		formData.unit_measure_key = unit.claveMexicana;
+			formData.stock_unit_of_measure_description = unit.description;
+			if (showErrors) validateField('stock_unit_of_measure');
+		} else {
+			formData.unit_of_measure = unit.code;
+			formData.unit_of_measure_description = unit.description;
+			formData.unit_measure_key = unit.claveMexicana;
+			if (showErrors && isInventoryMode) validateField('stock_unit_of_measure');
+			validateField('unit_of_measure');
+		}
 		showUnitDialog = false;
 		searchUnit = '';
 	}
@@ -379,6 +472,24 @@ const isInventoryMode = $derived(mode === 'inventory');
 		}
 	}
 
+	async function handleStockUomBlur() {
+		if (!isInventoryMode) return;
+		validateField('stock_unit_of_measure');
+		const code = formData.stock_unit_of_measure?.trim().toUpperCase();
+		if (!code) {
+			formData.stock_unit_of_measure_description = '';
+			return;
+		}
+		await loadUnitsOfMeasure();
+		const found = unitsOfMeasureData.find((u) => u.code.toUpperCase() === code);
+		if (found) {
+			formData.stock_unit_of_measure = found.code;
+			formData.stock_unit_of_measure_description = found.description;
+		} else {
+			formData.stock_unit_of_measure_description = '(Código no encontrado)';
+		}
+	}
+
 	// Fix 2: Máscara para Fracción Americana (formato 0000.00.00.00 = 13 chars)
 	function formatUSFraction(event: Event) {
 		const input = event.target as HTMLInputElement;
@@ -544,6 +655,18 @@ const isInventoryMode = $derived(mode === 'inventory');
 		searchCartaPorte = '';
 	}
 
+	function validateStockUnitOfMeasureField(errors: Record<string, string>) {
+		if (!formData.stock_unit_of_measure?.trim()) {
+			errors.stock_unit_of_measure = 'La unidad de medida de existencia es obligatoria';
+			return;
+		}
+		delete errors.stock_unit_of_measure;
+		if (stockUmcDiffer && conversionExists === false) {
+			errors.stock_unit_of_measure =
+				'No existe factor de conversión para este par. Configúrelo en el catálogo de Conversiones de UM.';
+		}
+	}
+
 	// Función de validación
 	function validateForm(): boolean {
 		const errors: Record<string, string> = {};
@@ -566,6 +689,13 @@ const isInventoryMode = $derived(mode === 'inventory');
 			errors.unit_of_measure = 'La unidad de medida comercial es obligatoria';
 		}
 
+		if (isInventoryMode && !formData.stock_unit_of_measure?.trim()) {
+			errors.stock_unit_of_measure = 'La unidad de medida de existencia es obligatoria';
+		} else if (isInventoryMode && stockUmcDiffer && conversionExists === false) {
+			errors.stock_unit_of_measure =
+				'No existe factor de conversión para este par. Configúrelo en el catálogo de Conversiones de UM.';
+		}
+
 		if (!formData.fraction?.trim()) {
 			errors.fraction = 'La fracción arancelaria es obligatoria';
 		}
@@ -611,6 +741,14 @@ const isInventoryMode = $derived(mode === 'inventory');
 				} else {
 					delete errors.unit_of_measure;
 				}
+				if (isInventoryMode) {
+					validateStockUnitOfMeasureField(errors);
+				}
+				break;
+			case 'stock_unit_of_measure':
+				if (isInventoryMode) {
+					validateStockUnitOfMeasureField(errors);
+				}
 				break;
 			case 'fraction':
 				if (!formData.fraction?.trim()) {
@@ -625,6 +763,10 @@ const isInventoryMode = $derived(mode === 'inventory');
 	}
 
 	async function handleSave() {
+		if (isInventoryMode && stockUmcDiffer) {
+			await checkUnitConversionPair();
+		}
+
 		// Validar formulario
 		if (!validateForm()) {
 			showErrors = true;
@@ -789,6 +931,48 @@ const isInventoryMode = $derived(mode === 'inventory');
 			{/if}
 		</div>
 
+		{#if isInventoryMode}
+			<div class="space-y-2 md:col-span-2">
+				<Label for="stock_unit_of_measure" class="font-bold">
+					U.M. Existencia: <span class="text-red-500">*</span>
+				</Label>
+				<div class="flex flex-wrap items-center gap-2">
+					<Input
+						id="stock_unit_of_measure"
+						bind:value={formData.stock_unit_of_measure}
+						placeholder="UME"
+						class="min-w-[5rem] flex-1 uppercase {validationErrors.stock_unit_of_measure
+							? 'border-red-500 focus-visible:ring-red-500'
+							: ''}"
+						maxlength={5}
+						onblur={handleStockUomBlur}
+					/>
+					<Button type="button" variant="outline" size="icon" onclick={openStockUomSearch}>
+						<Folder class="h-4 w-4" />
+					</Button>
+					<span class="text-sm text-blue-600">
+						{formData.stock_unit_of_measure_description || ''}
+					</span>
+				</div>
+				{#if validationErrors.stock_unit_of_measure}
+					<p class="mt-1 text-sm text-red-500">{validationErrors.stock_unit_of_measure}</p>
+				{/if}
+
+				{#if stockUmcDiffer}
+					{#if conversionCheckLoading}
+						<p class="text-sm text-muted-foreground">Verificando factor de conversión…</p>
+					{:else if conversionExists === false}
+						<p class="text-sm font-semibold text-red-600">
+							UM Existencia ≠ UM Comercial y no existe factor de conversión para este par.
+							Configúrelo primero en el catálogo de Conversiones de UM.
+						</p>
+					{:else if conversionExists === true}
+						<p class="text-sm text-green-600">Factor de conversión encontrado para este par.</p>
+					{/if}
+				{/if}
+			</div>
+		{/if}
+
 		<div class="space-y-2">
 			<Label for="fraction" class="font-bold">
 				Fracción Arancelaria: <span class="text-red-500">*</span>

frontend/src/routes/dashboard/goods/fixed-asset-classes/+page.svelte

@@ -13,7 +13,7 @@
 	import { companyStore } from '$lib/stores/company.svelte';
 	import { systemStore } from '$lib/stores/system.svelte';
 	import DataTable from '$lib/components/dashboard/goods/classes/data-table.svelte';
-	import { columns } from '$lib/components/dashboard/goods/classes/columns';
+	import { createColumns } from '$lib/components/dashboard/goods/classes/columns';
 	import { currentUser } from '$lib/auth';
 	import ErrorState from '$lib/components/dashboard/common/error-state.svelte';
 	import {
@@ -72,6 +72,7 @@
 	const activeSystem = $derived(systemStore.activeSystem);
 	const isInventoryMode = $derived(activeSystem === 'inventory');
 	const isFixedAssetMode = $derived(activeSystem !== 'inventory');
+	const tableColumns = $derived(createColumns({ includeStockUom: isInventoryMode }));
 
 	// Permisos
 	const canView = $derived(canViewGoodsClasses($currentUser));
@@ -494,7 +495,7 @@
 					<div class="min-h-0 flex-1 overflow-hidden">
 						<DataTable
 							data={classes}
-							{columns}
+							columns={tableColumns}
 							loading={isLoading}
 							selectedIds={selectedClassIds}
 							onSelectedIdsChange={handleSelectedIdsChange}
@@ -756,6 +757,12 @@
 									description_en: cleanData.description_en?.trim() || '',
 									material_key: cleanData.material_key?.trim() || '',
 									unit_of_measure: cleanData.unit_of_measure?.trim() || '',
+									...(isInventoryMode
+										? {
+												stock_unit_of_measure:
+													cleanData.stock_unit_of_measure?.trim() || null
+											}
+										: {}),
 									fraction: mxFraccionNorm,
 									us_fraction: cleanData.us_fraction || '',
 									physical_review: cleanData.physical_review ? 1 : 0,
@@ -825,6 +832,12 @@
 								description_en: cleanData.description_en?.trim() || '',
 								material_key: cleanData.material_key?.trim() || '',
 								unit_of_measure: cleanData.unit_of_measure?.trim() || '',
+								...(isInventoryMode
+									? {
+											stock_unit_of_measure:
+												cleanData.stock_unit_of_measure?.trim() || null
+										}
+									: {}),
 								fraction: mxFraccionNorm,
 								us_fraction: cleanData.us_fraction?.trim() || '',
 								sub_key: cleanData.sub_key || '',