Margin Scheme - VAT cannot be reclaimed, not documented

I sell second hand goods under the Margin Scheme for Second Hand Goods and issue a receipt without a VAT figure and with the text stating "Margin Scheme for Second Hand Goods". One of my customers has queried and I want to point them to the documentation that states they cannot reclaim VAT. This is not explicit in https://www.gov.uk/vat-margin-schemes, can you point me elsewhere please that makes this clear.

https://www.gov.uk/vat-margin-schemes/keeping-records (you'll need to read through to the section under "selling").

Hi secondtrader2,
Please see the guidance below:
VAT Margin Schemes
Thank you.