Systemd’s New Feature Brings Age Verification Option to Linux

The optional birthDate field gives other projects a standardized data source for age verification compliance.

Systemd’s New Feature Brings Age Verification Option to Linux

The optional birthDate field gives other projects a standardized data source for age verification compliance.

It's FOSS
Which values should I absolutely not manually write into the birthday field Json data, because they could break the DB on the other side when storing unsanitized input?
Asking for a friend?