The user's lastname field is mandatory by default, but it can be made
optional by overriding the Language_en.properties:
lang.user.name.required.field.names=
When a new user is created, the lastname field is validated this way:
if (Validator.isNull(lastName) &&
fullNameDefinition.isFieldRequired("last-name")) {
throw new ContactNameException.MustHaveLastName();
}
If the lastname is null, it only throws an exception when the
"last-name" value is listed in that
lang.user.name.required.field.names property.
However, when the user is auto-created based on the UserInfo endpoint
of the Identity Provider upon logging via SSO for the first time, a
similar logic is missing:
if (Validator.isNull(lastName)) {
throw new OpenIdConnectServiceException.UserMappingException(
"Last name is null");
}
If the lastname can be optional, it should be taken into an account
in all places.
