参照约束违规：插入teradata时无效的外键值

Question

表定义：

create set table admin
( 
employee char(36) not null
)
constraint abc Primary key (employee);

create set table user
(
employee char(36) not null
employee_address char(36) not null
)admin(
constraint aaa primary_key(employee,employee address)
constraint cde foreign key(employee) references admin(employee);

问题：

尝试将数据插入表User时，面临错误

Referential constraint violation: invalid Foreign Key value

检查数据，发现正在引用的外键存在于admin表中..

非常感谢一些帮助!!