What causes a customer to have prepayments?

I’ve noticed that some of my customers have prepayments recorded in their accounts, and I’m unsure of the reason behind this. Is it possible for these prepayments to be added without my direct input? Additionally, is there a way to track when and why they were created? It could be due to something I did unintentionally, but I’m not aware of how it happened.

Any clarification or insight you can provide would be greatly appreciated.
Thank you

Hello @patrick797

When tagging a money in transaction > Receipt from customer, if you select payment on account (assign later), this would cause it (see example below)

It is an unallocated payment on a customer account

You can view all of these in the Sales > View Payments screen. Apply a search as below

Thank you for your reply
Is it possible for these prepayments to be added without my direct input? I can’t remember doing it