[Resolved] Strange wpml_invalid_tag in the advanced translation editor

Problem:
The client was experiencing issues with

wpml_invalid_tag

errors, which prevented them from saving their translations in the Advanced Translation Editor (ATE). The errors were related to incorrect HTML tag usage within the translation content.
Solution:
We advised the client to ensure that HTML tags are correctly used in the content, with proper opening and closing tags, and self-closing tags having a slash (e.g.,

<br />

). We identified the problematic content in the original XLIFF file and provided the corrected version:

A memorable domain name is increasingly important for establishing a <strong>strong <a href="https://www.marcus-aurelius.com/online-presence/">online presence</a></strong> and <strong>enhancing brand recognition</strong>. It also plays a significant role in SEO by improving search engine visibility and attracting organic traffic.

We recommended that the client correct the code in the page content and then attempt to translate the page again.

Please note that this solution might be irrelevant due to being outdated or not applicable to your case. If the issue persists, we highly recommend checking related known issues, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If necessary, please open a new support ticket in the WPML support forum.