Content syndication will replicate your content on third-party sites, so that other sites can provide your valuable content to their readers, while also driving new visitors to your site. Content syndication is a great way to get your blog posts and articles promoted on external sites. The problem is that content syndication creates a huge SEO problem, syndication creates duplicate content and duplicate content is a big no-no in the search engine world. That said, content syndication can be done right if you cover your bases: Here’s a few SEO tips to lessen the likelihood you get dinged for duplicate content: If you’re establishing your relationship with the syndication partner, you can also explore whether they would be open to the following options:
Content Syndication SEO: How to avoid ‘duplicate content’ penalties

Unfortunately, we can’t control the search engines. Even if you take precautions, it’s not entirely foolproof. That said, if you’re syndicating content and not taking the right precautions, not only can a syndication partners outrank your original content, but in the worst case, Google will see your site as not providing unique content and devalue your site as a whole.