# 134 Executed Unavailable Migrations - unable to doctrine:schema:update - foreign key constraint 'FK\_3A18CA5A19EB6921'

**URL:** <https://forum.mautic.org/t/134-executed-unavailable-migrations-unable-to-doctrineupdate-foreign-key-constraint-fk-3a18ca5a19eb6921/15850>\
**Category:** Product Support\
**Created:** [August 28, 2020, 4:13pm UTC](https://forum.mautic.org/t/134-executed-unavailable-migrations-unable-to-doctrineupdate-foreign-key-constraint-fk-3a18ca5a19eb6921/15850 "2020-08-28T16:13:25Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![maumatic](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/maumatic/32/3284_2.png) [@maumatic](https://forum.mautic.org/u/maumatic)\
**Post date:** [February 7, 2021, 6:55am UTC](https://forum.mautic.org/t/134-executed-unavailable-migrations-unable-to-doctrineupdate-foreign-key-constraint-fk-3a18ca5a19eb6921/15850/10 "2021-02-07T06:55:16Z")

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I could finally update my database scheme, I explained how I did here:

> <https://github.com/mautic/mautic/issues/9129#issuecomment-774616000>
>
> Bug Description
> I've had a few different SQL migration errors since updating to 3.1.0 from 2.16.3. Most I've been able to figure...

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