What Is FBA Prep for Amazon and What Are the Key Requirements?
If you sell products through Amazon FBA, getting your stock to an Amazon fulfilment centre is only part of the process. Before Amazon can receive and process your inventory, your products need to be correctly prepared, packaged and labelled.
This is where FBA prep comes in.
FBA prep is the process of preparing your products so they meet Amazon's packaging, labelling, safety and shipment requirements before they are sent to an Amazon fulfilment centre. Depending on your product, this can include FNSKU labelling, polybagging, bubble wrapping, bundling, sealing, boxing, inspection and other preparation work.
Getting this wrong can cause more than a minor delay. Non-compliant inventory can be refused, returned, repackaged or charged for additional preparation. Amazon's UK guidance also warns that failure to meet FBA preparation, safety and product requirements can result in inventory being refused, disposed of or returned, as well as additional charges.
For UK sellers, understanding FBA prep before sending stock to Amazon can help you avoid unnecessary costs and receiving problems.
In this guide, we explain what FBA prep means, the main Amazon requirements, how the process works and when using an FBA prep centre such as Blue30 can make sense.
What is FBA prep?
FBA prep is the process of preparing inventory for Amazon's fulfilment network.
FBA stands for Fulfilment by Amazon. Under the FBA model, you send your products to Amazon, and Amazon stores the inventory and fulfils customer orders.
However, Amazon does not expect sellers to simply send loose products into its fulfilment centres.
Products need to arrive in a condition that allows Amazon to identify, handle, store and fulfil them safely and efficiently.
FBA prep can include:
Inspecting products for damage or incorrect quantities
Applying FNSKU or other required labels
Removing or covering conflicting barcodes
Polybagging products
Bubble wrapping fragile items
Sealing products securely
Bundling multiple products into one sellable unit
Applying sold as set labels where required
Preparing cartons and shipment labels
Checking box contents, dimensions and weights
Preparing goods with specific expiration or category requirements
Amazon states that preparation requirements can vary depending on the product. Its Seller Central workflow can identify specific prep requirements for individual products, but sellers remain responsible for ensuring their inventory is adequately prepared.
Why is FBA prep important?
The purpose of FBA prep is not simply to make products look tidy.
Amazon's fulfilment network depends heavily on standardised processes, scanning and automated handling. Products need to be identifiable and protected throughout receiving, storage and fulfilment.
If a product arrives without the required preparation or labelling, several things can go wrong.
For example, a barcode might not scan correctly. A fragile product could be damaged during handling. A bundle could be separated into individual items. A product could require additional preparation before Amazon can process it.
Amazon's UK shipping guidance states that non-compliance can lead to refusal of inventory, disposal or return of goods, blocking of future shipments and preparation or non-compliance charges.
This makes FBA prep an important part of your Amazon supply chain rather than simply an administrative task.
What are the main Amazon FBA prep requirements?
The exact requirements depend on the product and its category, but there are several areas every FBA seller should understand.
1. Product packaging
Each sellable unit needs to be packaged securely and appropriately for storage, handling and shipping.
Loose products generally need to be contained within a secure package. Amazon also has specific requirements for products that are fragile, sharp, liquid, bundled or otherwise require additional protection.
Amazon's UK packaging guidance explains that inventory arriving without proper preparation or labelling may incur preparation fees.
The important point is that your retail packaging is not automatically suitable for Amazon FBA.
A product may look perfectly packaged when it leaves your supplier but still require additional preparation before being sent to Amazon.
2. FNSKU and barcode labelling
Correct labelling is one of the most important parts of FBA prep.
An FNSKU, or Fulfilment Network Stock Keeping Unit, is an Amazon-specific identifier used to associate inventory with a seller and product.
Depending on the product and Amazon's requirements, you may need an Amazon barcode rather than relying solely on a manufacturer barcode such as a UPC or EAN.
Before sending inventory, check the barcode requirements for the specific product in Seller Central.
Existing barcodes can also create problems if Amazon could accidentally scan the wrong identifier. Where required, existing scannable barcodes need to be covered or rendered unscannable.
Amazon's preparation guidance specifically states that products need an exterior scannable barcode or label and that existing barcodes may need to be covered or made unscannable.
Labels also need to remain visible and scannable after the product has been fully prepared.
3. Polybagging
Some products require polybagging for protection.
This can apply to products such as clothing, liquids, products that could leak, or items where additional protection is required.
Where polybags have an opening of 5 inches or larger when measured flat, Amazon's guidance requires a suffocation warning. Other requirements can apply to the bag itself and how it is sealed.
Because Amazon's preparation requirements can change, always check the current Seller Central guidance for your specific product before preparing a large quantity.
4. Bubble wrapping and fragile products
Fragile products may need additional protection before being sent to Amazon.
Glass, ceramics and other breakable products may require bubble wrapping or additional packaging.
Amazon's preparation guidance includes a 3 foot drop test for products requiring bubble wrap. The test involves five consecutive drops onto a hard surface to check whether the product and packaging remain intact.
This is particularly important for sellers shipping fragile products because damage during inbound transportation can create unnecessary costs and stock problems.
5. Bundles and products sold as sets
If multiple items are intended to be sold together as one unit, they need to be prepared so Amazon does not separate them. For example, imagine you sell a skincare bundle containing a cleanser, moisturiser and face mask.
If those three products are intended to be sold as one product, the complete bundle needs to be securely packaged and identified as a single sellable unit.
Amazon recommends clear wording such as "Sold as Set" for products that must remain together. This is also where FBA prep overlaps with kitting and bundling services.
6. Expiration dated products
Products with expiry or best-before dates have additional requirements.
This can be particularly relevant to food, drink, cosmetics, supplements and other products with a limited shelf life.
Amazon's UK packaging guidance states that expiration dates need to follow specified formats, and expiration dated products must display the date on the individual unit and outer packaging where applicable.
The date also needs to remain accessible after additional preparation such as polybagging or bubble wrapping.
If you sell products with limited shelf life, it is important to check the requirements before deciding how stock should be packaged.
FBA prep requirements for different types of products
Not every product follows the same preparation process.
A basic boxed product might only need inspection, labelling and carton preparation, while another product could require several additional steps.
For example:
Product type | Potential FBA prep |
Standard boxed product | Inspection, labelling and carton preparation |
Clothing | Polybagging, labelling and barcode preparation |
Glass products | Bubble wrapping and labelling |
Liquids | Leak protection, polybagging and labelling |
Product bundles | Bundling, secure packaging and set labelling |
Food and drink | Date checking, labelling and category specific preparation |
Cosmetics | Product specific preparation and labelling |
Electronics | Packaging, labelling and applicable safety or compliance checks |
These are examples rather than a universal checklist. Amazon can apply different requirements depending on the individual product, category and circumstances.
What happens during an FBA prep process?
A good FBA prep process should be consistent from the moment stock arrives until the finished shipment leaves the warehouse.
Step 1: Receive the stock
Your inventory arrives at your warehouse, supplier, prep centre or another receiving location.
The first step should be checking what has actually arrived.
This can include checking quantities, SKUs, product condition and packaging.
Step 2: Inspect the products
Products should be checked for visible damage, incorrect items and other issues before preparation begins.
Finding a problem before the inventory reaches Amazon is generally much easier than discovering it after the shipment has been received.
Step 3: Apply the required prep
The products are then prepared according to their requirements.
This could include:
FNSKU labelling
Polybagging
Bubble wrapping
Heat shrinking
Bundling
Repacking
Sealing
Product rework
Step 4: Prepare the shipment
Once the individual units are ready, they need to be packed into shipping cartons according to the shipment requirements.
Box contents, quantities, weights and dimensions should be checked carefully.
Amazon also requires shipment and box identification information as part of the inbound process.
Its UK shipping guidance emphasises accurate box content information because it can help inventory move through receiving more efficiently and avoid problems.
Step 5: Send the shipment to Amazon
Once the shipment is prepared and the required labels and documentation are complete, the goods can be dispatched to the relevant Amazon fulfilment centre.
This is the point where a well-organised FBA prep process can save considerable time.
Instead of trying to correct preparation problems after the shipment has left your warehouse, the checks have already been completed.
Should you do FBA prep yourself or use an FBA prep centre?
There is no single answer for every Amazon seller.
If you are selling small volumes and your products have straightforward requirements, handling prep yourself may be practical. However, the situation changes as your inventory volume grows.
You may find yourself spending significant time:
Printing and applying labels
Checking individual units
Polybagging products
Building bundles
Managing cartons
Creating shipments
Arranging deliveries
Checking Amazon requirements
Dealing with stock that needs rework
At that point, outsourcing FBA prep can become a practical operational decision rather than simply an extra service cost.
A specialist FBA prep centre can receive your inventory, inspect it, prepare it and organise shipments to Amazon as part of one process.
What should you look for in an FBA prep centre?
If you are considering outsourcing, do not choose a provider based only on the lowest price per unit.
Ask questions such as:
Which prep services do you provide?Check whether they can handle the specific requirements of your products, including labelling, polybagging, bundling and protective packaging.
How do you check incoming stock?A receiving process can help identify quantity discrepancies and damaged products before they enter the FBA shipment.
How are products tracked?Barcode scanning and shipment-level tracking can provide better visibility over your inventory.
How quickly can you process FBA shipments?Turnaround time matters when you need to replenish Amazon inventory.
Can you manage the shipping to Amazon?Having preparation and outbound shipping handled by the same provider can simplify your workflow.
Can you support other fulfilment channels?If you also sell through Shopify, your own website, eBay or other channels, a broader fulfilment partner may give you more flexibility.
How Blue30 supports FBA prep
Blue30 provides FBA prep and fulfilment services for Amazon sellers, including receiving, inspection, FNSKU labelling, polybagging, bubble wrapping, bundling, boxing and shipment preparation.
Blue30's FBA prep service is designed to handle the preparation process before inventory is dispatched to Amazon fulfilment centres.
The service can also support different Amazon selling models, including private label, wholesale and online arbitrage.
For sellers that also operate their own ecommerce store, combining FBA prep with fulfilment can provide another option.
Instead of managing separate stock locations and logistics providers, inventory can be managed through a broader fulfilment operation.
You can learn more about Blue30's FBA prep service or review the FBA prep pricing approach to understand how preparation costs are structured.
Blue30 also provides UK fulfilment services, which can be useful if you want to manage Amazon FBA inventory alongside direct-to-consumer orders from one fulfilment operation.
FBA prep checklist
Before sending your next shipment to Amazon, use this simple checklist:
Product
Are the correct products and quantities being shipped?
Have damaged units been removed?
Are product variations correctly identified?
Packaging
Is every unit securely packaged?
Does the product require polybagging?
Does it require bubble wrapping or additional protection?
Are bundles securely packaged as one sellable unit?
Labelling
Is the correct barcode being used?
Is the FNSKU correctly matched to the product?
Are old or conflicting barcodes covered where required?
Is every barcode visible and scannable?
Shipment
Are carton quantities correct?
Are box dimensions and weights accurate?
Are the required FBA box labels applied?
Has the shipment information been checked before dispatch?
Special requirements
Does the product have an expiry date?
Does it contain batteries or other regulated materials?
Does it fall into a category with additional Amazon requirements?
Are any required documents or compliance information available?
Frequently asked questions about FBA prep
What is FBA prep?
FBA prep is the process of preparing products to meet Amazon's packaging, labelling and other requirements before inventory is sent to an Amazon fulfilment centre.
It can include inspection, FNSKU labelling, polybagging, bubble wrapping, bundling and shipment preparation.
Is FBA prep required for every Amazon product?
No. The preparation required depends on the product and its packaging. Some products may need little or no additional preparation, while others have specific requirements for packaging, labelling, expiry dates or safety.
Amazon's Seller Central workflow provides product specific preparation guidance, but sellers remain responsible for ensuring their inventory is compliant.
Can Amazon do FBA prep for me?
The availability of Amazon's own prep and labelling services depends on the marketplace and current Amazon policy. For UK sellers, Amazon's preparation requirements should be checked directly in Seller Central before every shipment.
If you do not want to handle preparation yourself, a third-party FBA prep provider can prepare and label inventory before it reaches Amazon.
What is an FNSKU?
An FNSKU is an Amazon identifier used to identify and track specific inventory associated with a seller and product.
Where an Amazon barcode is required, the correct FNSKU needs to be applied to the relevant unit and remain scannable after preparation.
How much does FBA prep cost?
FBA prep costs depend on the work required. Simple labelling may cost less than services involving polybagging, bubble wrapping, bundling, rework or additional packaging.
You should also consider storage, receiving, shipping and other charges when comparing providers.
Is it worth using an FBA prep centre?
For low-volume sellers with simple products, handling prep yourself may be practical. For growing sellers, outsourcing can reduce manual work and create a more consistent process for receiving, inspecting, preparing and shipping inventory to Amazon.
Final thoughts on FBA prep
FBA prep is much more than putting a barcode on a product.
It is the process of making sure your inventory is correctly inspected, packaged, labelled and prepared before it enters Amazon's fulfilment network.
The exact requirements depend on what you sell, which means you should not assume that a preparation process that works for one SKU will automatically work for another.
If you are managing increasing Amazon volumes, outsourcing FBA prep can also remove a significant amount of repetitive warehouse work.
The right provider should be able to handle your specific preparation requirements while giving you clear visibility over your stock and shipments.
If you are looking for a UK partner to handle FBA prep, Blue30 can receive, inspect, prepare and dispatch your Amazon inventory as part of its FBA prep operation.
Get a tailored FBA prep quote from Blue30 and discuss the preparation requirements for your products.
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