German phrase
Bitte reichen Sie ~ ein.
Meaning
Please submit ___
When to use it
Please submit something. It is polite and formal, often used for forms or documents.
Example dialogue
Bitte reichen Sie das Formular bis Freitag ein.
Please submit the form by Friday.
In Ordnung, ich reiche es am Donnerstag ein.
All right, I will submit it on Thursday.