保険 ほけん しゃ番号 ばんごうではありませんでした
ho kenshabangōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 保険者番号

1. It was not an insurance card number.; It was not the insurance policyholder number.

Past/Perfective
Negative
Polite
Formal Register