Lots

Lots are the codes that separate products from the same production run, delivery, or expiration batch. In Putaway WMS, a lot is used mainly for perishable products, so receiving, stock, documents, and traceability keep the same product identity.

A lot belongs to the current account and is linked to a supplier. During receiving, Putaway WMS uses the selected supplier to show only the matching lots.

Note

For Putaway WMS to require a lot in Goods Receiving, the product must be configured as perishable in Products.

Opening the Lots Page

Open Lots from the Catalog menu.

The page is available to users with the lot view permission. Creating and deleting lots use separate permissions, so a user may be able to view lots without being allowed to change them.

What the Page Shows

The lots list shows:

• lot code;
• production date;
• expiration date;
• supplier;
• delete action, if the user has permission.

On desktop, lots are shown in a table. On mobile, the same information is shown as cards with the lot code, production date, expiration date, and supplier.

The list is paginated. By default, 15 lots are shown per page, and the user can choose 10, 15, 25, or 50 rows. The choice is saved in the browser.

Filters

The Filters panel can be expanded or collapsed. Its state is saved in the browser.

You can filter by:

Filter	What It Does
Search lot	Searches by lot code.
Supplier	Shows only lots for the selected supplier.
Production date	Shows lots with the exact selected production date.
Expiration date	Shows lots with the exact selected expiration date.

The Reset button clears the filters and reloads the list.

Tip

If you have many lots, start with the supplier, then narrow the result by lot code or expiration date.

Creating a Lot

To create a lot:

1. Click Add lot.
2. Enter the lot code.
3. Choose the production date, if relevant.
4. Choose the expiration date, if the lot expires.
5. Choose the supplier.
6. Click Add.

The lot code and supplier are required. Production and expiration dates are optional, but for perishable products it is recommended to enter the expiration date when it exists on the package or in the supplier documents.

Creation Rules

Putaway WMS validates the lot on the backend before saving:

• the lot code must be filled in;
• the supplier must exist in the current account;
• the production date must be valid and cannot be in the future;
• the expiration date is selected from the present or future in the interface;
• the same lot code cannot be saved twice for the same supplier;
• the total number of lots is limited by the client’s WMS plan.

Caution

Do not create duplicate lots that differ only by letter casing or spaces. Use the exact code from the package or supplier documents and keep the same form in every operation.

Lots and Perishable Products

A lot does not add stock by itself. Stock appears only when the product is received, adjusted, or added through an operational workflow.

For perishable products:

• the product must be marked as perishable in Products;
• the lot must be created before receiving;
• during scanning, Putaway WMS asks for the lot;
• the backend rejects adding a perishable product if the lot is missing;
• the selected lot must belong to the receiving supplier.

If the product is both perishable and serializable, Putaway WMS requires both the lot and the serial numbers.

Using Lots in Goods Receiving

In Goods Receiving, after the supplier is selected, Putaway WMS loads that supplier’s lots.

When scanning a perishable product:

1. The operator scans the product barcode.
2. Putaway WMS checks the product and supplier.
3. If the product requires a lot, the lot selector opens.
4. The operator chooses the correct lot.
5. Putaway WMS adds the product to the receiving location with that lot.

The selector shows the lot code and expiration date. Expired lots are not offered for receiving.

Note

If no lot appears in the selector, the lot must be created in the Lots page for the selected supplier.

Fast Scanning with LOT

Putaway WMS can read the lot directly from the label when the scanned code contains the LOT: segment.

The accepted format is:

BARCODE;LOT:LOT-123

For products that also have a serial number, the format can include SN::

BARCODE;LOT:LOT-123;SN:SERIAL-1

BARCODE must be a product barcode. LOT-123 must exist as a lot for the selected supplier. If the lot is found, Putaway WMS applies it automatically. If it is not found, the lot selector opens.

Product Labels with Lots

From Products, you can use the Print labels action.

For perishable products, the dialog allows:

• choosing the lot mode: without lot or with lot;
• searching the lot by code or expiration date;
• including the lot code in the QR Code or Data Matrix.

For serializable products, the same dialog allows manual serial entry or automatic serial generation. For products that are both perishable and serializable, the label can contain both LOT and SN.

How the Lot Is Kept in Stock

When a product is added to a location, Putaway WMS saves the lot on the stock line. Stock with a different lot remains separated in receiving, putaway, transfer, inventory, and traceability.

The lot is visible or used in:

• Goods Receiving;
• Goods Receipt Note;
• Putaway;
• Transfer;
• Inventory Adjustments;
• Stock;
• Stock History;
• Traceability;
• picking and packing, when the order is linked to lot-tracked stock.

In reports and investigations, the lot should be read together with the product, supplier, location, expiration date, and serial number, if one exists.

Deleting a Lot

A lot can be deleted from the list only by users who have the delete permission.

Putaway WMS does not allow deleting a lot if:

• the lot is linked to products in a way that makes it active;
• there is stock recorded on that lot.

If deletion is rejected, first check Stock, Traceability, and the workflows where the lot was used.

Caution

Do not delete operationally used lots just to clean up the list. If the lot entered stock, keeping it helps with audit, FIFO, expiration tracking, and investigations.

Common Situations

The Perishable Product Cannot Be Received

Check whether the product is marked as perishable, whether the selected supplier is correct, and whether the lot exists for that supplier.

The Lot Does Not Appear in Receiving

Receiving shows lots for the selected supplier and excludes expired lots. Check the supplier, lot code, and expiration date.

The Label with LOT Does Not Select the Lot Automatically

Check the scanned format. The segment must be LOT:LOT-CODE, separated with ; from the product barcode. If the lot does not exist or belongs to another supplier, Putaway WMS asks for manual selection.

The Lot Cannot Be Deleted

The lot is used by stock or has active links. Check where the lot appears before making any correction.

Working Rules

• Create the lot before receiving perishable products.
• Use the real lot code, not an invented code.
• Choose the correct supplier when creating the lot.
• Enter the expiration date when the product has a shelf life.
• Do not physically mix products with different lots without keeping them separated in Putaway WMS as well.
• For investigations, filter by lot in Traceability and check the full stock path.