Failed update ojs 2.4.8-5 to 3.2.1-4 | Duplicate entry '14696-3-1' for key 'review_rounds_submission_id_stage_id_round_pkey'

[marc]

Check error #05 in this list:

Common errors when upgrading to OJS 3.2.x from OJS 2.x

This post is a compilation of errors/warnings I found in the upgrade of the 50 independent OJS in our service. With OJS 3.3 released and only 1/3 of journals in OJS2.x most of you will find this post useless, but I feel like I need to share those notes, just in case it could be useful for somebody else… Technical background is required to understand and perform those actions. This list could/would be extended and/or modified: Feel free to comment if you think relevant errors are missed. IMP…

Cheers,
m.