https://community.appian.com/discussions/f/general/8996/upload-zip-file-issuesi want to validate a!fileUploadField If there are multiple files in the .zip file after i hit Submit button and present an error to the user,if it is more than one file .the problem is how i can drill down the Zip file and check how may files are withinen-USTelligent Community 12https://community.appian.com/thread/40039?ContentTypeID=1Tue, 06 Dec 2016 19:53:56 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:a6b920ef-9674-48d2-87e4-d42e08fd6938Carlos SantanderI agree with philb that a plugin would do the trick. Getting the number of entries shouldn&#39;t be too slow, though. Check <a href="https://docs.oracle.com/javase/8/docs/api/java/util/zip/ZipFile.html#size--">docs.oracle.com/.../ZipFile.html</a>, which gives you exactly what you need.<div style="clear:both;"></div>https://community.appian.com/thread/40035?ContentTypeID=1Tue, 06 Dec 2016 19:37:50 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:f444b9a8-2020-48c5-81e9-3f98bc4dd4f5sikhivahans@sefenez Also here is a post at <a href="https://forum.appian.com/suite/tempo/entry/f-201480">forum.appian.com/.../f-201480</a> which would be helpful just in case if you want to bring the zip contents into Appian.<div style="clear:both;"></div>https://community.appian.com/thread/40034?ContentTypeID=1Tue, 06 Dec 2016 19:22:34 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:9ca9f73d-dd2c-4cbb-9f69-c6c66d32f51dPhilBMaybe you could upload the file, unzip the file using a plugin, count the files, and then return an error if there&#39;s more than one? There&#39;s a plugin for unzipping here - <a href="https://forum.appian.com/suite/tempo/records/item/lMBCLGOdlMUpdGVqW3dQaIKmclBmvvNEj8vu_cjb7T-5YiPr4Fu8ly5Yj1s09uenE4RYzA8zKyx7eiUhuuiLnMD1ak1XjnaguzunxoFhUQv2X6vGQ/view/summary">forum.appian.com/.../summary</a><br /><br />This solution might be rather slow for the user, though...<div style="clear:both;"></div>