# ConcurrencyControl ### Concurrency Control This is used to prevent users from overwriting records. If two users have loaded the same record, and both make changes, than the user that saves first, will commit his changes, but the second user will not be able to save after the first user saved. In other words, you will only be able to save a record if noone saved it between you loading it and your save attempt. --- # 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://brixxbox.gitbook.io/brixxbox-documentation/configuration/app-editor/app-editor-properties/concurrencycontrol.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.