French phrase
Quels justificatifs dois-je présenter pour ~ ?
Meaning
What supporting documents do I need to submit for ___?
When to use it
A polite question about documents needed for a procedure. It is especially common in applications and official processes.
Example dialogue
Quels justificatifs dois-je présenter pour un visa étudiant ?
What supporting documents do I need to submit for a student visa?
Il vous faut la lettre d'acceptation et un justificatif de ressources.
You need the acceptance letter and proof of financial resources.