Migration from Other Integrators (Connector Change)

If you’re using another integrator and want to switch to Base, follow this Connector Change Steps:

Before Processing Request

• Process all pending orders on your current connector
  
• Set inventory to zero on the old connector only after completing order processing
  
• Clean-up any leftover sync tasks or dependencies to avoid future conflicts

What You Need to Share with Amazon

Send these details to the Amazon team:

• Seller Name
  
• PCID / MCID (Merchant ID)
  
• Old Connector Name
  
• New Connector (Base)
  
• Business Justification (mention integration with Base.com)

Timelines

• Requests are processed once per week
  
• TAT (Turnaround Time): 1 business day after Amazon receives the completed request
  
• Best to raise on Monday or Tuesday, as Amazon teams are unavailable over the weekend
  

Setting Up a New Seller Flex Site Code

If you are not currently using any integrator and your site code does not start with X…, here’s how to request a new Flex code:

Step-by-Step

1. Determine Your Site Type:
   

   • Is it a Small Parcel or Heavy & Bulky (H&B) site? This affects which template to fill

2. Fill Templates:

   • Use the correct Amazon sheet + Google form
     
   • Reach out to Base Support if unsure which template applies

3. Wait for Approval:

   • Amazon typically takes 2–3 weeks to process site code requests (when lead intake is active)

4. Training & Verification:

   • You’ll receive an email to complete Seller Flex training and upload 4M readiness proofs

5. Location ID Setup:

   • Once training is done, Amazon will share Location IDs with the seller and Base
     
   • If you’re already live on Easyship, request an additional Location ID via Afroz at [email protected]

Integrating Flex Site in Base

Once you have both Location IDs:

1. Go to Base Integrations → Add Channel → Amazon
   
2. In Orders Section, toggle Smart Connect API = Yes 
3. Go to Warehouse Mapping, add warehouses for each Location ID
4. Order Status Mapping:
   “Confirmed” → Sent to Amazon after order fetch
   “Ship Label Generated” → Triggered after label creation
   
5. Shipping Integration: Select Amazon Flex. (Note: If the merchant is on SellerFlex, they’re supposed to get both Seller Flex and Easyship labels via ‘Amazon Seller Flex’ (aka Amazon Smart Connect) courier integration)
   
6. Listing Management

• Listings fulfilled via FBA also qualify as part of Seller Flex
  
• When importing listings from Amazon, ensure you also pull FBA listings

Mandatory Dry Run: Before Go-Live

A successful dry run is compulsory before full integration. It includes:

1. Inventory Sync

• Choose 2–3 low-selling SKUs with zero inventory on Amazon FC or Flex
  
• Sync from Base → Amazon
  
• Verify sync on Seller Central
  

2. Order Sync

• Place a test order on Amazon
  
• Wait for Shipment ID generation (can take up to 48 hours)
  
• If the order doesn’t reflect in Base after 48 hours:
  • Ask the seller to raise a Case ID
    
  • Escalate Case ID to Amazon POC

3. Return Sync

• Test a return flow
  
• Verify return visibility and sync in Base

Once all 3 dry run steps are completed:

• Create a summary sheet
  
• Share it with the Amazon team for approval

Only after a successful dry run can you go live with the full catalogue