The inventory index doesn't get re-indexed, it gives this message:
The product that was requested doesn't exist. Verify the product and try again.
In other questions I found that there could be products without SKU, but there aren't any in my database.
I have read here that the re-indexation process generates a table with virtual stock based (among others) on quantity from assigned stocks. Now I found that there are SKU's in my inventory source (default source) for items I deleted, so products with these SKU's do not exist. Could this cause this issue?
If this causes the issue, what should I delete/update? I do not know in what table this inventory is stored. Or if there are any other sources/tables that need these items deleted.