Amazon Seller Central Dynamic Integration with Plytix

January 30, 2026

Amazon Seller Central Dynamic Integration with Plytix

The challenge of maintaining product information in multiple sales channels can be daunting, particularly when you are dealing with hundreds or thousands of SKUs. In the case of Amazon sellers, there is a high need to have correct and updated information of products to be visible, compliant and trusted by the customers.

This is the point where Plytix and the Selling Partner API (SP-API) of Amazon are in perfect collaboration.

Plytix is a centralized Product Information Management (PIM).
SP-API allows communication with Amazon Seller Central automatically, product listing, pricing changes, and inventory synchronization.

In this article, we will learn a step-by-step guide on how to connect Plytix and Amazon Seller Central via SP-API, as well as provide examples of the code and tips for implementation.

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Step 1: Export Product Data from Plytix

Plytix acts as the single source of truth for your product information. Export your products in a format Amazon can understand, such as JSON.

Example Plytix Export File (amazon_products_n9.json):

[{“sku”: “A995”,“productType”: “Clothing”,“title”: “Men’s T-Shirt”,“brand”: “BrandName”,“price”: 19.99,“quantity”: 100,“images”: [“https://cdn.plytix.com/images/product_1.jpg”]}]

Key Notes:

Ensure the SKU matches what you want to use on Amazon.
Include all required fields like title, brand, price, quantity, and images.
JSON structure must follow Amazon’s feed requirements.

Step 2: Configure SP-API Credentials

To communicate with Amazon, you need credentials for SP-API credentials, including LWA and AWS details.

$CONFIG = [‘lwa_client_id’ => ‘YOUR_CLIENT_ID’,‘lwa_client_secret’ => ‘YOUR_CLIENT_SECRET’,‘refresh_token’ => ‘YOUR_REFRESH_TOKEN’,‘aws_access_key’ => ‘YOUR_AWS_KEY’,‘aws_secret_key’ => ‘YOUR_AWS_SECRET’,‘role_arn’ => ‘YOUR_ROLE_ARN’,‘marketplace_id’ => ‘A28R8C7NBKEWEA’,‘spapi_host’ => ‘sellingpartnerapi-eu.amazon.com’];

Step 3: Authenticate and Assume Role

Amazon SP-API requires two types of authentication:

OAuth access token via LWA.
Temporary AWS credentials via STS Assume Role.

$lwaToken = getLwaAccessToken($CONFIG[‘lwa_client_id’], $CONFIG[‘lwa_client_secret’], $CONFIG[‘refresh_token’]);$stsCreds = assumeRoleWithSigV4($CONFIG[‘aws_access_key’], $CONFIG[‘aws_secret_key’], $CONFIG[‘role_arn’], ‘session’.time());

Step 4: Create a Feed Document

Before uploading data, Amazon requires you to create a feed document.

$doc = createFeedDocumentFlow($stsCreds,$lwaToken,$CONFIG[‘spapi_host’]);echo “Feed Document ID: ” . $doc[‘feedDocumentId’];

Step 5: Upload Product Data to Amazon

Upload the Plytix export file to the pre-signed URL returned by Amazon.

$xmlContent = file_get_contents(__DIR__ . ‘/amazon_products_n9.json’);uploadFeedToUrl($doc[‘url’], $xmlContent);

Step 6: Submit the Feed

Once uploaded, submit the feed to Amazon for processing.

$submit = submitFeed($stsCreds,$lwaToken,$CONFIG[‘spapi_host’],$doc[‘feedDocumentId’],$CONFIG[‘marketplace_id’]);$feedId = $submit[‘feedId’];echo “Feed ID: $feedId”;

Step 7: Poll Feed Processing Status

Track the feed status to ensure successful processing.

$statusRes = signedSpApiRequest(‘GET’,$CONFIG[‘spapi_host’],“/feeds/2021-06-30/feeds/$feedId”,”,$stsCreds,$lwaToken);echo “Processing Status: ” . $statusRes[‘processingStatus’];

Step 8: Verify Listings on Amazon

Confirm that the product is live in Amazon Seller Central.

$item = getListingItem(‘YOUR_SELLER_ID’,‘A995’,$CONFIG[‘marketplace_id’],$stsCreds,$lwaToken,$CONFIG[‘spapi_host’]);print_r($item);

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Best Practices for a Successful Plytix–Amazon SP-API Integration

Validate Plytix Product Exports Before Uploading to Amazon
Protect SP-API Credentials in Logs, Code, and Screenshots
Use Incremental Feeds to Manage Large or Growing Catalogs
Automate Feed Status Polling to Track Processing in Real Time
Log All Feed Submissions, Warnings, and Errors for Troubleshooting

Key Benefits of Integrating Plytix with Amazon SP-API

Centralized Product Data Management for Amazon Seller Central
Automated Product Listing and Inventory Updates
Consistent Product Information Across All Sales Channels
Improved Operational Efficiency and Scalability
Reduced Listing Errors and Faster Issue Resolution

The combination of SP-API and Plytix with Amazon Seller Central simplifies the process of managing products and avoids headaches related to manual listing. With a data flow that is automated between your PIM and Amazon, you can be sure of accuracy, scalability, and accelerated go-to-market, particularly for expanding catalogs.

Still need help in setting up or customizing your Amazon Seller Central and Plytix integration? Reach out to us we’d be happy to help. Our team specializes in seamless, secure integrations tailored to your business. Contact us today to get started.

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