This isn't quite right.

Meaning

Something is inaccurate or unsatisfactory.

Examples

• John: I've finished the report.
• Alice: Let me take a look. Hmm...<b>This isn't quite right</b>. The figures in section three seem off.
• John: Oh dear, where did I go wrong?
• Alice: I think you might have miscalculated the totals. <b>This isn't quite right</b> as it stands.