# Merge safety — Dedupely Knowledge Base > Match limits and merge limits cap how large a duplicate group can get before Dedupely asks you to review it. - URL: https://dedupe.ly/knowledge-base/merge-safety - Section: knowledge-base - Site index: https://dedupe.ly/llms.txt - Any page: append `.md` to its URL for this plain-text form --- ## Merge safety Limit number of matches and merges Merging records in your CRM requires precision, and Dedupely is built to help you merge confidently while minimizing the risk of incorrect merges. While there are no restrictions on the number of matches or merges you can perform, Dedupely provides **safety settings** and **visual warnings** to help you avoid merging unrelated or risky data groups. This guide explains how those settings work and shares tips for avoiding bad merges. ### Safety settings: Match limits & merge limits Dedupely includes a set of safety settings, in the Safety Settings menu of each object. ### Match limits Set a maximum number of duplicates allowed in a single match group. If a match exceeds your configured Match Limit, it will be **hidden automatically** from your Duplicate Search to help avoid merging large, potentially unrelated groups. This is especially helpful when using broad matching logic (e.g. matching only on First Name or Company Name), which can generate too many results in one group. ### Merge limits Set a limit on how many records can be merged at once in a match. If you try to merge a group that exceeds your Merge Limit, Dedupely will **prompt you with a warning** before proceeding. ### What happens when a merge group exceeds your limit? If your selected matches include a group with more records than your merge group setting allows, Dedupely will display a warning message: - High risk matches found. One or more of the selected matches has more than # duplicate. - This may mean they are incorrect. If you are unsure, please skip large matches and review them individually later. You’ll then be given two options: - **Skip large matches (recommended):** Proceed only with safe groups and revisit the others later. - **Include large matches (not recommended):** Proceed with all selected groups, including those over the safety threshold. This gives you a chance to **pause and review large match groups**, especially if they were generated by flexible or experimental matching rules. ### Helpful tips to avoid missed or incorrect merges Even with safety settings in place, the best protection is a thoughtful setup. Follow these tips: - Use at least **3 fields** to define your match logic. E.g., First Name + Last Name + Email. - Watch for duplicate groups with **5 or more records.**These often indicate weak logic or missing filters. - Run a few **single merges** before launching Auto or Bulk Merge. - Leverage **Merge Rules** to control how specific fields behave during a merge. - Schedule Auto Merge during **off-hours** while you fine-tune your setup. ### Summary - Dedupely does **not limit** how many matches or merges you can perform. - You can **adjust your match and merge group size settings** in your preferences. - If a match group exceeds the threshold **you’ve set**, the system will display a prompt so you can decide how to proceed. - Use filters, thoughtful field selection, and targeted search logic to reduce false matches. Need help tuning your Duplicate Searches or understanding why certain records didn’t appear? We’re here to help, start a chat or **[book a Zoom with our support team](https://meetings.dedupe.ly/meetings/gaby-salinas/kb-zoom-scheduler)**[.](https://meetings.dedupe.ly/meetings/gaby-salinas/kb-zoom-scheduler) ### Still stuck? - Need help? [Talk to support](https://dedupe.ly/contact) - Questions about plans? [Book a Zoom with sales](https://meetings.dedupe.ly/meetings/hampus-isaksson/dedupely-zoom-schedule) - Reading this with a model? [Read this page as Markdown](https://dedupe.ly/knowledge-base/merge-safety.md) - Feeding it the whole site? [Read llms.txt](https://dedupe.ly/llms.txt) ### Get started for free 20 free trial merges and as much free support as you need to get your duplicates under control. [Talk to sales](https://meetings.dedupe.ly/meetings/hampus-isaksson/dedupely-zoom-schedule)[Try for free](https://v2.app.dedupe.ly/signup) [Or sign up with Google](https://v2.app.dedupe.ly/signup/google) Running CRM cleanup for clients? [See the Partner Program](https://dedupe.ly/become-a-partner) Skip to content