Time Nick Message 03:37 dpk_ I received this error while upgrading the database from 20.05 to 20.11: 03:37 dpk_ DBD::mysql::db do failed: Cannot delete or update a parent row: a foreign key constraint fails (`koha_test`.`letter`, CONSTRAINT `message_transport_type_fk` FOREIGN KEY (`message_transport_type`) REFERENCES `message_transport_types` (`message_transport_type`)) [for Statement " 03:37 dpk_ UPDATE message_transport_types SET message_transport_type = "itiva" WHERE message_transport_type = "phone" 03:37 dpk_ "] at /usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl line 23190. 03:38 dpk_ (all other updates applied fine) 03:39 dpk_ I do not believe external messaging is used by this library (EFDSS). 03:40 dpk_ This is the upgrade notice message: 03:40 dpk_ Upgrade to 20.06.00.058 done [19:29:47]: Bug 25333 - Change message transport type for Talking Tech from "phone" to "itiva" 03:40 huginn Bug http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=25333 enhancement, P5 - low, ---, kyle, Pushed to master , Change message transport type for Talking Tech from "phone" to "itiva" 11:46 tuxayo dpk_: hi :) There are not many people here the weekend so I advise you to also try the general mailing list: 11:46 tuxayo https://koha-community.org/support/koha-mailing-lists/