Amazon Listing Errors: Error 90188: Value does not satisfy ISBN/UCCID checksum requirements for attribute 'ean8'

Error Description

The "Error 90188: Value does not satisfy ISBN/UCCID checksum requirements for attribute 'ean8'" error indicates that the EAN-8 code entered for the ean8 attribute does not meet the checksum requirements. EAN-8 is an 8-digit barcode used for small packages, and it includes a checksum digit to ensure accuracy. This error arises when the checksum validation fails, suggesting that the code might be incorrect or improperly formatted.

Common Causes:

Incorrect EAN-8 Code: The EAN-8 code provided is incorrect or has typographical errors.
Checksum Validation Failure: The code does not pass the checksum validation, indicating a possible error in the code.
Formatting Issues: The code might not be formatted correctly according to EAN-8 standards.

Error Solution

To resolve the "Error 90188: Value does not satisfy ISBN/UCCID checksum requirements for attribute 'ean8'," follow these steps:

Identify the Invalid EAN-8 Code:
- Review the error message details in Amazon Seller Central to identify the specific SKU and the ean8 value causing the issue.
Verify EAN-8 Requirements:
- Refer to Amazon’s guidelines or the official EAN-8 standards to understand the correct format and checksum requirements for EAN-8 codes.
- An EAN-8 code consists of 7 digits plus a checksum digit, making a total of 8 digits.
Calculate the Checksum:
- Calculate the checksum for the EAN-8 code to verify its validity. The checksum calculation involves the following steps:
  - Sum the digits in the odd positions (first, third, fifth, seventh).
  - Multiply this sum by 3.
  - Sum the digits in the even positions (second, fourth, sixth).
  - Add the results of the two sums.
  - The checksum digit is the smallest number which, when added to the result, produces a multiple of 10.

Example Calculation:

EAN-8 code without the checksum: 1234567
Odd position sum: 1 + 3 + 5 + 7 = 16
Multiply by 3: 16 × 3 = 48
Even position sum: 2 + 4 + 6 = 12
Total sum: 48 + 12 = 60
The checksum digit: The smallest number that, when added to 60, gives a multiple of 10 (which is 0).
Full EAN-8 code: 12345670

Correct the EAN-8 Code:
- Access your inventory file or the specific product listing.
- Correct the ean8 attribute with a valid EAN-8 code that passes the checksum validation.

Example Correction:

Ensure the EAN-8 code is correctly formatted and validated, e.g., 12345670.

Use Amazon’s Templates:
- Ensure you are using the correct category-specific templates provided by Amazon.
- These templates help ensure that each attribute is populated with values in the correct format and with valid checksums.
Submit the Corrected Data:
- Prepare a new inventory file with the corrected attribute 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 prevent future occurrences of this error.
- 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 EAN-8 codes and how to correctly format and validate them.
- Provide guidelines and resources to help them stay updated with Amazon’s requirements.

Pro Tip

Advanced Strategies for Managing Barcode Attributes on Amazon

Develop a Comprehensive Data Management System:
- Implement a robust data management system to centralize and manage all product information, including barcode attributes like EAN-8. 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 incorrect barcode values.
Create Standard Operating Procedures (SOPs):
- Develop and document SOPs for entering and managing product data. These procedures should include steps for verifying barcode values, 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 barcode attributes and the importance of accurate data entry. Ensure they understand the impact of incorrect barcode values 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 barcode attribute 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 barcode attributes. 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 incorrect barcode values.
Stay Updated with Amazon’s Policies:
- Regularly review Amazon’s policies and guidelines regarding product listings and barcode attributes. 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 barcode attributes, 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 barcode attributes, minimize the risk of "Error 90188: Value does not satisfy ISBN/UCCID checksum requirements for attribute 'ean8'," 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.

View error on Amazon

Amazon Error: 90188 Error 90188: Value does not satisfy ISBN/UCCID checksum requirements for attribute 'ean8'

Error Description

Error Solution

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