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Square INVALID_PROMOTION error encountered during checkout.

The promotion applied is invalid or not applicable to the transaction.

Understanding Square's Payment Gateway

Square is a leading FinTech API provider that offers a comprehensive suite of tools for handling online payments, including checkouts and payment processing. It is widely used by businesses to facilitate seamless transactions and manage promotions effectively.

Identifying the INVALID_PROMOTION Error

When using Square's API, you might encounter the INVALID_PROMOTION error during the checkout process. This error indicates that the promotion code applied to a transaction is either invalid or not applicable, preventing the transaction from proceeding.

Exploring the Root Cause

Invalid Promotion Code

The most common cause of this error is an incorrect or expired promotion code. Ensure that the code entered is correct and still valid.

Inapplicable Promotion

Another possibility is that the promotion does not apply to the items in the cart or the transaction conditions. Check the promotion's terms and conditions to verify its applicability.

Steps to Resolve the INVALID_PROMOTION Error

Step 1: Verify Promotion Code

Double-check the promotion code for any typographical errors. Ensure that the code is active and has not expired. You can manage and verify promotion codes through Square's Promotions API.

Step 2: Check Promotion Applicability

Review the promotion's terms and conditions to ensure it applies to the current transaction. Consider factors like minimum purchase requirements, applicable items, and customer eligibility.

Step 3: Update Promotion Details

If the promotion details are incorrect, update them in your Square dashboard. Navigate to the Square Dashboard, locate the promotion, and make necessary adjustments.

Additional Resources

For more detailed guidance, refer to Square's official Developer Documentation. If the issue persists, consider reaching out to Square's Customer Support for further assistance.

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