Bed and breakfat rules

If you buy and sell the same shares on the same day inadvertantly (due to inexperience without any intent to avoid tax) breaking the bed and breakfast rules of buy and selling the same shares on the same within 30 days what are the potential consequences/associated fines for this action. I am struggling to find this out. Also if the CGT is the allowance anyway and the purchase/selling of the shares results in loss within this be significant?

Hi,
Please refer to the link below for guidance:
CG13360 - Bed and breakfasting: conditions to be satisfied
Thank you