# "Files Damaged" error in tally and Unable to sync data with Biz Analyst app ### In Tally if you are getting an error as "Files Damaged" that means your tally data got corrupted. ![](/files/-M3pNWUzqnUwZaCOmlfU) ### **Solution:** 1\. Rewrite data in tally. 2\. If still getting the same error to restore old data back up and re-sync the company in biz analyst desktop application. 3\. Still the same then, Export all your tally data create a new company and import all your data in your new company after that add that new company in the Biz Analyst app and sync your data. 4\. The Issue will be resolved**.** --- # 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://help.bizanalyst.in/biz-analyst-manual/support/problems-with-tally-after-installing-biz-analyst/data-files-damaged-in-tally-and-data-is-not-syncing-in-mobile-application..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.