User (well, really boss ) contacted me about problem with map creation, I'll upload screenshots.

Real problem is that map contained link to trigger which doesn't exist.
So this solved problem:

mysql> select * from sysmaps_link_triggers where triggerid=25499;
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1 row in set (0.00 sec)

mysql> delete from sysmaps_link_triggers where triggerid=25499;
Query OK, 1 row affected (0.00 sec)

Question is why link was not removed on trigger deletion?