Spanish phrase
Dime si no puedes.
Meaning
Let me know if you can't.
When to use it
Requests advance notice if someone cannot do a task. Used to ask colleagues to warn about missed deadlines and encourage early communication to avoid delays.
Example dialogue
Dime si no puedes terminar el informe hoy.
Let me know if you can't finish the report today.
Haré lo posible, y si no llego te aviso.
I'll do my best, and if I can't finish I'll let you know.