3084142 - How to detect corrupted data of non-existing sourceitems and targetitems from itemsynctimestamps table

There are situation where problematic incorrect data is kept in itemsynctimestamps table. Such corrupt data can cause synchronization process failures, loops or cause further data corruption.

Columns named p_sourceitem and p_targetitem contain item's PKs. Those PKs should be a connection between itemsynctimestamp and existing source and target items (Products, Media, CMSItems and many other catalog aware types). When sourceitem's PK points to none-existing data then such itemsynctimestamp is corrupted and needs to be removed. Sometimes both source and target items point to none-existing items, but if only targetitem is affected then synchronization process may notice that and recover from that situations. In any case, the cleanup is the best solution.

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source , KBA , CEC-COM-CPS-CAS , Catalog & Sync , How To