適格てきかく請求せいきゅうしょとう保存ほぞん方式ほうしきではありませんでした
tekikakuseikyū shotō hozonhōshikidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 適格請求書等保存方式

1. Was not a qualified invoice preservation method.; Was not an eligible invoice storage method.

Past/Perfective
Negative
Polite
Formal Register
Law