Help Debbuging

I am doing a few custom modification to FC core for a especifique site.

I have made a CRON that updates everyday of the FC ITEMS.

I have manage to get all items to update correcly exept one.

How can I debug this?

I am missing one item only? What table in the DB could be missing?

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-- This message appears if there is an joomla article (= FC item) in __content DB table

but there is not record for this item in DB table __flexicontent_items_ext


e.g if content DB table is 'i'
and __flexicontent_items_ext is 'ext'

there is no record with column ext.item_id = i.id