Payment Gateway Errors refer to issues that arise during the processing of online transactions through payment gateways. These errors can occur due to various reasons, including technical glitches, incorrect payment details, insufficient funds, network issues, or compatibility problems between the gateway and the merchant\'s platform. Common errors include declined transactions, timeout errors, or invalid card details. Understanding and resolving these issues is crucial to ensure smooth payment processing, improve customer experience, and prevent revenue loss for businesses relying on digital payments.