Correction
Revision
noun, verbal noun, の adjective
ていせい
校閲 (こうえつ) Revision, Proofreading
改正 (かいせい) Revision, Amendment, Alteration
訂正 (ていせい) Correction, Revision
矯正 (きょうせい) Correction, Remedy
They てい say せい Revision is necessary.
The tater てい tot sales せい numbers need Revision.