Understanding FBA Prep Order Errors
Amazon validates your FBA prep orders against specific requirements for product dimensions, catalog status, hazmat classification, inventory limits, and more. When a product or shipment doesn’t meet these requirements, Amazon returns an error code with details about what needs to be fixed.Common Error Categories
FBA prep order errors typically fall into these categories:Products Not Populating While Searching
Issue: Your Amazon products don’t appear when you search for them in the FBA prep order creation flow. Solution: Always search for your Amazon product listing using the Amazon SKU or the Amazon product name (not your internal SKU or a partial name). Amazon’s search requires exact or close matches to populate results correctly.Product Information Errors
Fixing MISSING_DIMENSIONS or FBA_INB_0004
To update the Shipping Weight and Dimensions fields in Amazon Seller Central:Navigate to the item in your inventory
Select the item to edit it
Toggle to Advanced View
Go to the More Details tab
Update the Shipping Weight and Dimension fields
Hazardous Materials (HAZMAT) Errors
Amazon requires detailed dangerous goods information to correctly classify products and determine if they can be stored and fulfilled through FBA. Review typically takes 4 business days.Inventory Capacity Errors
SKU and Catalog Errors
Fixing UNKNOWN_SKU or FBA_INB_0006
Change the product to Fulfilled by Amazon
Launch the product on Amazon and wait
Retrieve the FNSKU
Alternative Solution for ERROR: The Following MSKUs Are Not Valid
If the SKU may be disconnected by Amazon, submit a full update for the listing in Amazon Seller Central to reinstate the product:Click Inventory in Amazon Seller Central
Select Manage Inventory
Locate the affected product
Click the 3 dots on the right of the product
Click Edit Listing
Listing and Product Configuration Errors
Fixing FBA_INB_0017 or FBA_INB_0018
To update your product(s) in Amazon Seller Central:Click Inventory in Amazon Seller Central
Select Manage Inventory
Locate the affected product
Click the 3 dots on the right of the product
Click Edit Listing
Locate and select the tab with an exclamation mark

Update the product details per the error notification
ITEM_STRANDED Common Reasons and Resolutions
Packing Group and Shipping Errors
Label and Prep Ownership Errors
Fixing PO43-FBA Label and Prep Ownership Issues
To configure the label and prep ownership settings correctly:Navigate to the Send to Amazon page
Locate the product under Step 1: Choose inventory to send
Review the Information/action column
Configure prepOwner (if applicable)
Configure labelOwner (if applicable)
Lot and Expiration Date Errors
Commingling and Barcode Errors
Account and Authorization Errors
Fulfillment Center and Product Eligibility Errors
Compliance and Documentation Errors
Order Creation and Technical Errors
Fixing Order Creation Failed
Resolving this issue depends on how many days have passed since making changes to the order creation page. If less than 24 hours have passed:Click Create on your draft order
Resume the process by selecting New Order
Navigate to your draft order
Click the Back button
Select Next Review
Click Create Order
Fixing ERROR: Operation GeneratePackingOptions Issues
There is an issue with a SKU’s barcode or lot information that must be corrected in Amazon:- Review the SKUs’ barcode: One of the SKUs may not be eligible for FBA with the barcode currently present in Amazon Seller Central and may require Amazon barcodes instead.
- Review the SKUs’ lot information: Check the lot information in Amazon Seller Central to ensure the information aligns with the information provided to Jetpack.
Unknown or General Errors
Let’s Dive Deeper
Amazon FBA with Jetpack
Creating Automated FBA Shipments
FBA LTL Workflow
Automated FBA Prep FAQs
Manual FBA Prep
B2B Fulfillment Overview

Questions? Contact Jetpack Care.
If you encounter an error not covered in this guide or need assistance resolving an FBA prep order issue, contact Jetpack Care for help. Our team is always here to assist via Slack, phone, or email!