Spanish (Castilian) · C1 general

Poner los puntos sobre las íes

Literally: "To put the dots on the i's"

To make things completely clear or set the record straight

Example

Tuvimos una reunión para poner los puntos sobre las íes y evitar más malentendidos.

We had a meeting to set the record straight and avoid further misunderstandings.

Pip says

This is perfect for when you need to be precise and leave no room for confusion. Every little detail matters, just like dotting your letters!

What does this phrase mean?