I’m not sure what you mean by "fts 15 obb." Possible interpretations include:
Because you are moving backup files that contain sensitive financial and customer data, security cannot be an afterthought. FTS 15 OBB includes: fts 15 obb
If you’re trying to install and keep seeing “Download failed because you may not have purchased this app” or a stuck loading screen, chances are the OBB file isn’t placed correctly. Here’s a quick guide to fix it. I’m not sure what you mean by "fts 15 obb