# Self-Trade Prevention When a new order attempts to match with a resting order placed by the same account, the existing order is cancelled, and the new order proceeds as per normal.\ \ This makes sure that no trades will happen between orders from the same account.\ \ The removed order will be labelled as "Rejected" under the "Status" column in order history. --- # 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://pacifica.gitbook.io/docs/trading-on-pacifica/self-trade-prevention.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.