Add columns from reconciled values not working via Wikidata

[Martin]

This looks related to another recent thread reporting reconciliation failures:

Error while reconciliating

Hello, I’m trying to use OpenRefine, but there are some troubles that have been happening this week. After I enter “Reconcile”, there are many cells showing “No. of recon objects was less than no. of jobs” in red. And when I try to match the others cells, the screen shows “No. of recon objects was less than no. of jobs”. I remember this exact same error happened in late 2025, and after a week it turned out to be okay. But does anybody knows the origin of the problem? Thank you

In both cases the errors appear to come from the Wikidata reconciliation service (https://wikidata.reconci.link/en/api) rather than from OpenRefine itself. Reported symptoms include:

• “No. of recon objects was less than no. of jobs”
• “The reconciliation service returned an invalid response”
• HTTP 403 errors during reconciliation operations

While investigating this, I also checked the service monitoring endpoint: https://wikidata.reconci.link/monitoring

Recent statistics show that the processing time per query has increased significantly compared to the 24-hour average, which suggests the service performance has deteriorated recently.

To help investigate this on the service side, I opened a task on Wikimedia Phabricator with logs and details: ⚓ T419770 Intermittent errors from Wikidata reconciliation service (wikidata.reconci.link) used by OpenRefine