This is a a nag that has a workaround, but basically I cannot set the defaultValue attribute in the column element to a function. I can work around it by:
alter table AssignLatch add constraint DF_AssignLatch_GUID DEFAULT newsequentialid() for GUID alter table AssignLatch drop constraint DF_AssignLatch_GUID
but it’d be nice to simply say:
BTW I tried it with parenthesis too: defaultValue="(newsequentialID())"