Indefinite leave to enter/remain in the UK

[Lexi1992]

Hi
I am in the process of filling out my AN Application for Naturalisation as a British Citizen
I am a bit confused about Section 1:
1.3 : Date you were given indefinite leave to enter/remain in the UK.

It is asking me to read through the booklet AN, which I have, but haven't actually found an answer to that question.
I'm from Poland, and have received my Permanent Residence Card already
Are they asking me to provide the date I have been granted my Permanent residence status? or am I wrong?
If I am, does anyone have an idea what do I write ?
Thanks a lot
Lexi

[CR001]

1.3 is not relevant to EU citizens. Leave blank and complete your PR details in the relevant EEA/EU section.

[Lexi1992]

great
thanks a lot!