@leo_satara ,
What makes you think that the problem is because someone was deleted? If you ran the provisioning report and included deleted objects, then Canvas doesn't think the account was deleted, it doesn't think it was ever created in the first place.
A couple of ways come to mind to track this down, both involving working with the enrollments file.
You can take the user IDs in the enrollments.csv file and try to match them up with the user_id from the provisioning report users.csv file and see which one doesn't match. You can do this in Excel using an =MATCH() function and look for ones that give you errors, I would copy both the enrollments.csv file and the users.csv file into a single Excel workbook on different sheets to make the calculations easier.
A second way is that you can divide your enrollments.csv file in half and upload one half of it. If it still has the error, then you know that it's in the that part and you can then cut that part in half and try again. If it's not in the part that you upload, it's in the other part. Keep narrowing the file down by 1/2 each time until you find the problem. Make sure that you're not checking that this is a full SIS import when you do this. If you have a lot of enrollments, this technique is not very efficient, but if it was a small incremental update, then this might actually be quicker.
A third way that I just thought of works for small enrollments.csv files. That's to take the user IDs that are in the file and search for them from the Admin People page. You can also take your provisioning CSV file and use a find feature to look for the user_ids. The match() is faster, but only if you know how to use match().
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