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This topic contains 3 replies, has 0 voices.

Last updated by Lucas Vidal de Andrade 2 days, 9 hours ago.

Assisted by: Lucas Vidal de Andrade.

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February 12, 2026 at 12:00 pm #17816796

lrn-accountsP

We have installed and activated the WPML Pro plugin on the Smartcode site, which has been in use for the past two years. However, over the last six to seven months, we have started encountering issues during the translation import process.
Specifically, when importing translated XLIFF files, the import sometimes fails or throws errors.
Smartcode is running on a WordPress multisite setup, and this issue occurs randomly for any languages. For example, if Site A has 5 languages enabled and Site B also has 5 languages enabled—with 2 languages common between both sites—the issue may occur on Site A for a language like French, while the same French language works correctly on Site B. This behavior is inconsistent and happens at random times.

Wanted to create a support ticket with WPML. Please refer error attached with.

February 12, 2026 at 1:54 pm #17817277

Lucas Vidal de Andrade
WPML Supporter since 11/2023

Languages: English (English ) Spanish (Español ) German (Deutsch ) Portuguese (Brazil) (Português )

Timezone: Europe/Vienna (GMT+01:00)

Hey there,

Thank you for waiting. To be able to check the issue and provide support I need to verify the issue directly.

1. Is there a consistent way to reproduce the issue? Perhaps an XLIFF that is failing that I can check as an example.
2. Access to a staging website, where I can reproduce the issue. If possible, please share access to one.

The required fields can be found below the comments section. The information you enter is private, i.e. only you and I can see it and have access to it.

I may need to replicate your website locally. To do this, I need to temporarily install a plugin called "Duplicator" or "All in One WP Migration" on your website. This will allow me to create a copy of your website and content. Once the issue is resolved, I will delete the local website. Let me know if this works for you.

IMPORTANT

Please make a backup copy of the site files and database before giving us access.

- If you do not see the wp-admin/FTP fields, this means your post and site login details are being made PUBLIC. DO NOT post your website details if you do not see the required wp-admin/FTP fields. If you do not, ask me to enable the private box. The private box looks like this:

hidden link

February 16, 2026 at 3:47 pm #17826482

lrn-accountsP

While we understand that replication is essential for accurate resolution, this issue is not reproducible in the QA environment and occurs only in the client environment. Unfortunately, we are unable to provide access to the client environment. As we continue attempts to replicate the issue in QA, could you please let us know if a similar issue has been reported by other clients and what the likely resolution was? We would also like to understand if any configurable settings could be triggering this behavior, so we can review and adjust them accordingly.

February 17, 2026 at 1:22 pm #17829301

Lucas Vidal de Andrade
WPML Supporter since 11/2023

Languages: English (English ) Spanish (Español ) German (Deutsch ) Portuguese (Brazil) (Português )

Timezone: Europe/Vienna (GMT+01:00)

Hello there,

I understand. We have this general guide-line when imports fail:
https://wpml.org/faq/the-uploaded-xliff-file-doesnt-belong-to-this-system/

Also, I found an issue that was also in a mixed staging/dev environment, that might give you some clues:
https://wpml.org/forums/topic/automatic-translation-jobs-failing-in-wpml-xliff-download-error-ate/

If this does not help, let me know. I'll get a second opinion with my colleagues to see what we could do to provide you with support without access.