Amazon Error: 90121 Error 90121: The value must match this pattern: \d+-\d+

The "Error 90121: The value must match this pattern: \d+-\d+" occurs when a value provided for an attribute does not match the required pattern of a numeric range separated by a hyphen.
Common Errors
Error 90121: The value must match this pattern: \d+-\d+

Error Description

The "Error 90121: The value must match this pattern: \d+-\d+" error indicates that the value entered for a specific attribute must follow a specific format. The pattern \d+-\d+ means that the value should consist of one or more digits, followed by a hyphen, and then followed by one or more digits (e.g., "5-10", "20-30"). This pattern is often used for specifying ranges, such as size ranges, date ranges, or other numerical ranges.

Common Causes:

  1. Incorrect Format: Entering a value that does not follow the required numeric range format.
  2. Missing Hyphen: Omitting the hyphen between the two sets of digits.
  3. Typographical Errors: Mistakes in typing the value, leading to a format that does not match the required pattern.
  4. Non-Numeric Characters: Including non-numeric characters in the value.

Error Solution

To resolve the "Error 90121: The value must match this pattern: \d+-\d+," follow these steps:

  1. Identify the Attribute with the Invalid Value:
    • Review the error message details in Amazon Seller Central to identify the specific attribute and the value causing the issue.
    • Note the SKU and the attribute that contains the invalid value.
  2. Verify Pattern Requirements:
    • Refer to Amazon’s guidelines to understand the required format for the specific attribute.
    • Ensure you understand the pattern \d+-\d+, which means a numeric range separated by a hyphen.
  3. Correct the Invalid Value:
    • Access your inventory file or the specific product listing.
    • Update the attribute value to match the required pattern.

Example Corrections:

  • If the attribute is a size range, ensure it follows the format "5-10".
  • For date ranges, ensure it is formatted like "2022-2023".
  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. Educate Your Team:
    • Train your team on Amazon’s requirements for attribute values and pattern matching.
    • Provide guidelines and resources to help them stay updated with Amazon’s requirements.

Pro Tip

Advanced Strategies for Managing Pattern Matching on Amazon

  1. Develop a Comprehensive Data Management System:
    • Implement a robust data management system to centralize and manage all product information, including pattern matching for attributes. 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 pattern matching.
  2. Create Standard Operating Procedures (SOPs):
    • Develop and document SOPs for entering and managing product data. These procedures should include steps for verifying pattern matching, 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.
  3. Regular Training and Updates:
    • Provide ongoing training for your team on Amazon’s standards for pattern matching and the importance of accurate data entry. Ensure they understand the impact of incorrect pattern matching on listing visibility and performance.
    • Keep your team informed about any updates or changes in Amazon’s guidelines through regular briefings or training sessions.
  4. Conduct Periodic Data Audits:
    • Schedule regular audits of your product listings to ensure compliance with Amazon’s pattern matching requirements. Use audit reports to identify and correct any discrepancies.
    • Implement corrective actions based on audit findings to prevent recurring issues.
  5. 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.
  6. 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.
  7. Monitor Product Performance Metrics:
    • Regularly monitor the performance metrics of your listings to identify any potential issues related to pattern matching. 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.
  8. 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 pattern matching.
  9. Stay Updated with Amazon’s Policies:
    • Regularly review Amazon’s policies and guidelines regarding product listings and pattern matching. 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.
  10. Professional Consultation:
    • If you face ongoing challenges with managing pattern matching, 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 pattern matching, minimize the risk of "Error 90121: The value must match this pattern: \d+-\d+," 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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