N600 Oath for minor - greencard surrendered with passport appplication

[harsimran0902]

Hello - i applied for N600 certificate of citizenship for my daughter, who is a minor. We applied for her US Passport last week as she got her citizenship through us (my wife and I, being naturalized citizens).

The document that we received suggests that we need to submit the greencard while coming for Oath. We do not have the greencard. Any guidance?