[4.x]: siteId should be a reserved word

[siebird]

What happened?

I stumbled across this one as we were using siteId as a custom field in Burrow and was wondering why generated titles {siteId}_{date} was using 1 instead of the value in that field entry.

Craft CMS version

4.3.6.1

[brandonkelly]

We’ve added a whole bunch of new reserved field handles for the next Craft 3 and 4 releases, to avoid additional conflicts with craft\base\Element properties.

[brandonkelly]

Craft 3.7.64 and 4.3.7 have been released with that change.

[leevigraham]

@brandonkelly How does adding new reserved field names effect existing fields which already have a reserved field name?

[brandonkelly]

@leevigraham You’d get a validation error the next time you try to save the field.