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Changes between Initial Version and Version 1 of Ticket #17415, comment 5

initial	v1
19	19	To sum up:
20	20	- under PostgreSQL, if you create a new object where you force the primary key, and then create another object where you leave the auto-generated primary key, the second operation will fail; this is the root cause of the bug;
21		- this problem has probably existed for a long time, but is more likely to bite users on Site objects since r16353;
	21	- this problem has probably existed for a long time, but is more likely to bite users on Site objects since #16353;
22	22	- even though it's annoying, I wouldn't qualify this as a release blocker, as the workaround is trivial and intuitive: just retry.
23	23