diff --git a/src/database/schemas/inventory/filamentstock.schema.js b/src/database/schemas/inventory/filamentstock.schema.js
index 8e48672..67938a6 100644
--- a/src/database/schemas/inventory/filamentstock.schema.js
+++ b/src/database/schemas/inventory/filamentstock.schema.js
@@ -20,6 +20,11 @@ const filamentStockSchema = new Schema(
       gross: { type: Number, required: true },
     },
     filamentSku: { type: mongoose.Schema.Types.ObjectId, ref: 'filamentSku', required: true },
+    stockLocation: {
+      type: mongoose.Schema.Types.ObjectId,
+      ref: 'stockLocation',
+      required: false,
+    },
   },
   { timestamps: true }
 );
diff --git a/src/database/schemas/inventory/partstock.schema.js b/src/database/schemas/inventory/partstock.schema.js
index 95d6baf..f8d9347 100644
--- a/src/database/schemas/inventory/partstock.schema.js
+++ b/src/database/schemas/inventory/partstock.schema.js
@@ -12,6 +12,11 @@ const partStockSchema = new Schema(
       progress: { type: Number, required: false },
     },
     partSku: { type: mongoose.Schema.Types.ObjectId, ref: 'partSku', required: true },
+    stockLocation: {
+      type: mongoose.Schema.Types.ObjectId,
+      ref: 'stockLocation',
+      required: false,
+    },
     currentQuantity: { type: Number, required: true },
     sourceType: { type: String, required: true },
     source: { type: Schema.Types.ObjectId, refPath: 'sourceType', required: true },
diff --git a/src/database/schemas/inventory/productstock.schema.js b/src/database/schemas/inventory/productstock.schema.js
index 86afaa4..b6038c0 100644
--- a/src/database/schemas/inventory/productstock.schema.js
+++ b/src/database/schemas/inventory/productstock.schema.js
@@ -19,6 +19,11 @@ const productStockSchema = new Schema(
     },
     postedAt: { type: Date, required: false },
     productSku: { type: mongoose.Schema.Types.ObjectId, ref: 'productSku', required: true },
+    stockLocation: {
+      type: mongoose.Schema.Types.ObjectId,
+      ref: 'stockLocation',
+      required: false,
+    },
     currentQuantity: { type: Number, required: true },
     partStocks: [partStockUsageSchema],
   },
diff --git a/src/database/schemas/inventory/stockevent.schema.js b/src/database/schemas/inventory/stockevent.schema.js
index ca11179..cc0bd31 100644
--- a/src/database/schemas/inventory/stockevent.schema.js
+++ b/src/database/schemas/inventory/stockevent.schema.js
@@ -25,7 +25,7 @@ const stockEventSchema = new Schema(
     ownerType: {
       type: String,
       required: true,
-      enum: ['user', 'subJob', 'stockAudit'],
+      enum: ['user', 'subJob', 'stockAudit', 'stockTransfer'],
     },
     timestamp: { type: Date, default: Date.now },
   },
diff --git a/src/database/schemas/inventory/stocklocation.schema.js b/src/database/schemas/inventory/stocklocation.schema.js
new file mode 100644
index 0000000..db99cc6
--- /dev/null
+++ b/src/database/schemas/inventory/stocklocation.schema.js
@@ -0,0 +1,29 @@
+import mongoose from 'mongoose';
+import { generateId } from '../../utils.js';
+const { Schema } = mongoose;
+
+const stockLocationSchema = new Schema(
+  {
+    _reference: { type: String, default: () => generateId()() },
+    name: { type: String, required: true },
+    notes: { type: String, required: false },
+  },
+  { timestamps: true }
+);
+
+stockLocationSchema.statics.stats = async function () {
+  const total = await this.countDocuments({});
+  return { total: { count: total } };
+};
+
+stockLocationSchema.statics.history = async function () {
+  return [];
+};
+
+stockLocationSchema.virtual('id').get(function () {
+  return this._id;
+});
+
+stockLocationSchema.set('toJSON', { virtuals: true });
+
+export const stockLocationModel = mongoose.model('stockLocation', stockLocationSchema);
diff --git a/src/database/schemas/inventory/stocktransfer.schema.js b/src/database/schemas/inventory/stocktransfer.schema.js
new file mode 100644
index 0000000..284bcd4
--- /dev/null
+++ b/src/database/schemas/inventory/stocktransfer.schema.js
@@ -0,0 +1,71 @@
+import mongoose from 'mongoose';
+import { generateId } from '../../utils.js';
+const { Schema } = mongoose;
+
+const stockTransferLineSchema = new Schema(
+  {
+    fromStockType: {
+      type: String,
+      required: true,
+      enum: ['filamentStock', 'partStock', 'productStock'],
+    },
+    fromStock: {
+      type: Schema.Types.ObjectId,
+      refPath: 'fromStockType',
+      required: true,
+    },
+    quantity: { type: Number, required: true },
+    toStockLocation: {
+      type: Schema.Types.ObjectId,
+      ref: 'stockLocation',
+      required: true,
+    },
+    toStockType: {
+      type: String,
+      required: false,
+      enum: ['filamentStock', 'partStock', 'productStock'],
+    },
+    toStock: {
+      type: Schema.Types.ObjectId,
+      refPath: 'toStockType',
+      required: false,
+    },
+  },
+  { _id: true }
+);
+
+const stockTransferSchema = new Schema(
+  {
+    _reference: { type: String, default: () => generateId()() },
+    state: {
+      type: { type: String, required: true, default: 'draft' },
+      progress: { type: Number, required: false },
+    },
+    postedAt: { type: Date, required: false },
+    lines: { type: [stockTransferLineSchema], default: [] },
+  },
+  { timestamps: true }
+);
+
+stockTransferSchema.statics.stats = async function () {
+  const [draft, posted] = await Promise.all([
+    this.countDocuments({ 'state.type': 'draft' }),
+    this.countDocuments({ 'state.type': 'posted' }),
+  ]);
+  return {
+    draft: { count: draft },
+    posted: { count: posted },
+  };
+};
+
+stockTransferSchema.statics.history = async function () {
+  return [];
+};
+
+stockTransferSchema.virtual('id').get(function () {
+  return this._id;
+});
+
+stockTransferSchema.set('toJSON', { virtuals: true });
+
+export const stockTransferModel = mongoose.model('stockTransfer', stockTransferSchema);
diff --git a/src/database/schemas/management/part.schema.js b/src/database/schemas/management/part.schema.js
index de89983..71008dc 100644
--- a/src/database/schemas/management/part.schema.js
+++ b/src/database/schemas/management/part.schema.js
@@ -31,19 +31,10 @@ partSchema.virtual('id').get(function () {
 partSchema.set('toJSON', { virtuals: true });
 
 partSchema.statics.recalculate = async function (part, user) {
-  const orderItemModel = mongoose.model('orderItem');
-  const itemId = part._id;
-  const draftOrderItems = await orderItemModel
-    .find({
-      'state.type': 'draft',
-      itemType: 'part',
-      item: itemId,
-    })
-    .populate('order')
-    .lean();
-
-  for (const orderItem of draftOrderItems) {
-    await orderItemModel.recalculate(orderItem, user);
+  const partSkuModel = mongoose.model('partSku');
+  const skus = await partSkuModel.find({ part: part._id }).select('_id').lean();
+  for (const sku of skus) {
+    await partSkuModel.recalculate(sku, user);
   }
 };
 
diff --git a/src/database/schemas/models.js b/src/database/schemas/models.js
index 86c5a26..f771452 100644
--- a/src/database/schemas/models.js
+++ b/src/database/schemas/models.js
@@ -17,6 +17,8 @@ import { stockEventModel } from './inventory/stockevent.schema.js';
 import { stockAuditModel } from './inventory/stockaudit.schema.js';
 import { partStockModel } from './inventory/partstock.schema.js';
 import { productStockModel } from './inventory/productstock.schema.js';
+import { stockLocationModel } from './inventory/stocklocation.schema.js';
+import { stockTransferModel } from './inventory/stocktransfer.schema.js';
 import { auditLogModel } from './management/auditlog.schema.js';
 import { userModel } from './management/user.schema.js';
 import { appPasswordModel } from './management/apppassword.schema.js';
@@ -157,6 +159,20 @@ export const models = {
     referenceField: '_reference',
     label: 'Product Stock',
   },
+  SLN: {
+    model: stockLocationModel,
+    idField: '_id',
+    type: 'stockLocation',
+    referenceField: '_reference',
+    label: 'Stock Location',
+  },
+  STT: {
+    model: stockTransferModel,
+    idField: '_id',
+    type: 'stockTransfer',
+    referenceField: '_reference',
+    label: 'Stock Transfer',
+  },
   ADL: {
     model: auditLogModel,
     idField: '_id',