# Maintain Cargoes Once you have [located](/release-5.20/voyage-management-system/step-by-step-guides/cargoes/find-cargoes.md) a cargo in your cargo list you can click this cargo and open up the cargo booking. You can maintain/edit the particulars of this cargo from this screen. ![](/files/-M-yqirPGq9MIeoMI7PE) Laycan dates are validated client side, indicated in red if one of the dates, either commencing or cancelling date is missing. The validation is separate for Laycan- and for Laycan target-fields. --- # 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.dataloy.com/release-5.20/voyage-management-system/step-by-step-guides/cargoes/maintain-cargoes.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.