Consultation on giving up permanent resident status in Canada

Literally, it should be the number of your "immigration document" or "maple leaf card"

When you land as a new immigrant, you will be given a piece of paper when you go through the landing formalities, which is also commonly known as "immigration paper". Immigration documents are documents that confirm your permanent resident status in Canada. There are two kinds of immigration documents, one is called landing record (number is IMM 1000), and the other is called permanent residence confirmation (number is IMM5292 or IMM5688). Either way, you will definitely have one. Just fill in the number on the paper.

There is no need to explain the maple leaf card, which is understood by permanent residents in Canada.