> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/functional-specification/surcharge_alert_incl_config_params.md). # surcharge\_alert\_incl\_config\_params Configuration Parameters\ `Merchant.SurchargeApplicationBehavior`\ Defines payment application surcharging behavior. * 0 - Card product-based surcharging * 1 - Card product-based surcharging with Merchant-override capability * 2 - Host-based Surcharging When `Merchant.SurchargeApplicationBehavior` is set to 0 (Card product-based surcharging), Payment Application will apply surcharge based on other Merchant surcharge configuration parameters. When `Merchant.SurchargeApplicationBehavior` is set to 1 (Card product-based surcharging with Merchant-override capability), an alert will be displayed to allow the merchant to decide whether each transaction is subject to surcharge. Selecting `Yes` will allow payment application to add surcharge based on the presented card and associated card product rules. Selecting `No` will continue the transaction without surcharge. In addition to `Merchant.SurchargeApplicationBehavior` parameter, when it is set to either 0 (Card product-based surcharging) or 1 (Card product-based surcharging with Merchant-override capability), other surcharge-related Merchant configuration parameters need to be set appropriately for payment application to apply a surcharge to each transaction. When `Merchant.SurchargeApplicationBehavior` is set to 2 (Host-based Surcharging), host will apply surcharge if the transaction is subject to surcharge. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.verifone.com/functional-specification/surcharge_alert_incl_config_params.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.