# Integration Options **Request domain name.** | Environment | Domain | | ----------- | ------------------------------------- | | test | | | product | | **Request Header** For each request, the request header should include the following three parameters. | Element | Mandatory | Data Type | Remarks | | -------------------- | --------- | --------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- | | ach-access-key | Y | string | Partner unique appKey, once a merchant has been on-boarded with Prepaidify, the merchant will be provided with the credentials with appKey and appSecret | | ach-access-timestamp | Y | string | UTC time with 13 digit to represent time in milliseconds, expiration period is 5 minutes. | | ach-access-sign | Y | string | SHA256(timestamp + method + requestPath + body), please refer to Signature Description for more information | --- # 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://prepaidify.gitbook.io/docs/kyc-sharing-api/integration-options.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.