# Signature Transaction Signature transaction is a security feature that allows the merchant to identify the transaction script from faspay system. Signature transaction is generated based on the parameters that are described in more detail based merchant transaction password. Password transaction will be shared by faspay, and the password is one of the important information in the hash (encryption of data). If the password is being used, then the signature that generated wrong and can not be integrated with faspay. --- # Agent Instructions: 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: ``` GET https://docs.faspay.co.id/merchant-integration/api-reference-1/credit-card-transaction/additional-api-integration/untitled.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.