Notifying Hmrc if adding more than £10k lump sum to sipp?

The link directly below says for a Sipp .. "If you’re paying in an amount greater than £10,000, you’ll need to contact HMRC to claim the tax relief". I've copied the full paragraph below the link. I know that standard rate tax payers don't usually need to do this but this seems to be an exception. Any thoughts? Should i just do it anyway? I've never added anything to a SIPP but i've had some inheritance and i'm doing my best to get it all in ISA's and SIPPs. https://www.gov.uk/tax-on-your-private-pension/pension-tax-relief Claiming tax relief yourself In some cases, you need to claim tax relief on pension contributions yourself. You’ll need to make a claim if: you pay Income Tax at a rate above 20% and your pension provider claims the first 20% for you (relief at source) your pension scheme is not set up for automatic tax relief someone else pays into your pension If you’re paying in an amount greater than £10,000, you’ll need to contact HMRC to claim the tax relief.

Hi graham fur,
For payment over £10,000 you need to write in with evidence of the payment.
HMRC cannot advise you on investments as this is financial advice, which we are not authorised to give.
Thank you.