> For the complete documentation index, see [llms.txt](https://docs.certinext.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.certinext.io/documentation/certificate-lifecycle-management/renewal-and-replacement.md). # Renewal and Replacement Renewal and Replacement workflows in CERTInext prevent service outages by ensuring certificates are renewed before expiration and replaced seamlessly where required. CERTInext continuously monitors certificate validity and triggers renewal actions based on defined thresholds. #### Renewal Management CERTInext supports: * Manual renewals initiated from the portal * Automated renewals using bots and APIs * Policy-driven renewal timelines (for example, renew 30 days before expiry) Renewed certificates are automatically linked to their predecessors, preserving lifecycle continuity and audit history. #### Replacement Scenarios Replacement may be required when: * Cryptographic algorithms or key sizes change * Certificate ownership or domains are modified * Compromised or non-compliant certificates must be replaced CERTInext handles replacement as a controlled lifecycle event, ensuring the old certificate is retired only after the new certificate is successfully deployed. --- # 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.certinext.io/documentation/certificate-lifecycle-management/renewal-and-replacement.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.