Amazon Listing Errors: Error 99102: The value assigned to externally_assigned_product_identifier (EAN) did not correspond with the value for externally_assigned_product_identifier (__) and was corrected to

Error Description

The "Error 99102: The value assigned to externally_assigned_product_identifier (EAN) did not correspond with the value for externally_assigned_product_identifier (__) and was corrected to" error indicates a discrepancy between the EAN and other assigned product identifiers such as ASIN or UPC. This mismatch can occur due to data entry errors, incorrect mapping, or using the wrong identifier. Amazon requires consistency and accuracy in these identifiers to ensure proper cataloging and listing of products.

Common Causes:

Mismatched Identifiers: Entering an EAN that does not match the product’s existing ASIN or UPC.
Incorrect Data Entry: Typographical errors or incorrect formatting of the EAN.
Incorrect Mapping: Using an incorrect template or data mapping that causes inconsistencies.

Error Solution

To resolve the "Error 99102: The value assigned to externally_assigned_product_identifier (EAN) did not correspond with the value for externally_assigned_product_identifier (__) and was corrected to," follow these steps:

Identify the Discrepancy:
- Review the error message details in Amazon Seller Central to identify the specific SKU and the mismatched EAN.
Verify External Identifiers:
- Ensure that the EAN, UPC, and ASIN values correspond correctly to the same product. Check Amazon’s guidelines to verify the correct format and consistency of these identifiers.
Correct the Mismatched Values:
- Access your inventory file or the specific product listing.
- Update the EAN to ensure it matches the corresponding ASIN or UPC correctly.

Example Corrections:

Before: { "sku": "B00123", "ean": "4006381333931", "asin": "__" }
After: { "sku": "B00123", "ean": "__", "asin": "__" } (Ensure the EAN is correct and matches the actual product)

Use Amazon’s Templates:
- Ensure you are using the correct category-specific templates provided by Amazon.
- These templates help ensure that each attribute, including externally assigned product identifiers, is populated according to Amazon’s requirements.
Submit the Corrected Data:
- Prepare a new inventory file with the corrected externally assigned product identifier values.
- Use Amazon’s bulk upload tools to submit the corrected inventory file.
- Validate the file before uploading to ensure it meets Amazon’s requirements.
Monitor and Verify Updates:
- After submission, monitor the status of your SKU updates in Amazon Seller Central.
- Verify that the error is resolved and that the listing is active without issues.
Implement Data Validation Checks:
- Integrate data validation checks in your inventory management system to ensure that all externally assigned product identifiers are consistent and correctly formatted.
- Use automated tools to validate and verify the correctness of product data before submitting listings.
Educate Your Team:
- Train your team on Amazon’s requirements for externally assigned product identifiers and the importance of ensuring consistency across EAN, UPC, and ASIN.
- Provide guidelines and resources to help them stay updated with Amazon’s requirements.

Pro Tip

Advanced Strategies for Managing Product Identifiers on Amazon

Develop a Comprehensive Data Management System:
- Implement a robust data management system to centralize and manage all product information, including externally assigned product identifiers. Such systems help ensure data accuracy, consistency, and compliance with Amazon's guidelines.
- Utilize software that integrates with Amazon’s API to automate the synchronization of product data, minimizing the risk of mismatched identifiers.
Create Standard Operating Procedures (SOPs):
- Develop and document SOPs for entering and managing product data. These procedures should include steps for verifying product identifiers, using the correct templates, and validating data before submission.
- Regularly update these SOPs to reflect any changes in Amazon’s requirements or your internal processes.
Regular Training and Updates:
- Provide ongoing training for your team on Amazon’s standards for product identifiers and the importance of ensuring consistency across EAN, UPC, and ASIN. Ensure they understand the impact of mismatched identifiers on listing visibility and performance.
- Keep your team informed about any updates or changes in Amazon’s guidelines through regular briefings or training sessions.
Conduct Periodic Data Audits:
- Schedule regular audits of your product listings to ensure compliance with Amazon’s product identifier requirements. Use audit reports to identify and correct any discrepancies.
- Implement corrective actions based on audit findings to prevent recurring issues.
Utilize Amazon’s Tools and Resources:
- Take advantage of the tools and resources provided by Amazon, such as inventory templates and validation tools, to ensure your product data is complete and compliant.
- Use Amazon’s Seller Central support and forums to stay informed about best practices and common issues faced by other sellers.
Engage with the Seller Community:
- Participate in Amazon seller forums and communities to share experiences and learn from other sellers. Engage in discussions about data management and compliance to gain insights and best practices.
- Attend webinars, workshops, and events hosted by Amazon or industry experts to enhance your understanding and skills.
Monitor Product Performance Metrics:
- Regularly monitor the performance metrics of your listings to identify any potential issues related to product identifiers. Use performance reports to track the impact of accurate data management on sales and visibility.
- Address any performance issues promptly to maintain compliance and optimize your listings.
Implement Automated Solutions:
- Consider implementing automated solutions or software that can assist in managing product data. These tools can help validate data, automate updates, and integrate with your inventory management system.
- Evaluate the benefits of such solutions to determine if they can enhance your data management processes and reduce the risk of mismatched identifiers.
Stay Updated with Amazon’s Policies:
- Regularly review Amazon’s policies and guidelines regarding product listings and externally assigned product identifiers. Stay informed about any changes or updates that may affect your listings.
- Subscribe to Amazon’s newsletters and follow their seller blogs to receive the latest information and updates.
Professional Consultation:
- If you face ongoing challenges with managing product identifiers, consider seeking professional consultation from experts specializing in Amazon compliance and data management.
- Professional consultants can provide tailored advice, help navigate complex issues, and improve your overall data management practices.

By adopting these advanced strategies, sellers can effectively manage product identifiers, minimize the risk of "Error 99102: The value assigned to externally_assigned_product_identifier (EAN) did not correspond with the value for externally_assigned_product_identifier (__) and was corrected to," and ensure accurate and compliant product listings on Amazon. Proper data management not only prevents errors but also enhances the visibility, searchability, and overall performance of your products on the platform.

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View error on Amazon

Amazon Error: 99102 Error 99102: The value assigned to externally_assigned_product_identifier (EAN) did not correspond with the value for externally_assigned_product_identifier (__) and was corrected to

Error Description

Error Solution

Pro Tip

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