On 15 January 2021 Mrs D South decided that she would buy the different types of cables and other fittings necessary for the services she renders and keep it in SA Stores’s inventory. Clients could...

On 15 January 2021 Mrs D South decided that she would buy the different types of cables and other fittings necessary for the services she renders and keep it in SA Stores’s inventory. Clients could then buy the necessary cables and fittings from SA Stores and Mrs South could advise them on what is needed for a specific service rendered. SA Stores would receive a 20% discount if the entity buys in bulk from SA Wholesalers. Mrs South paid for the order placed by way of an internet transfer from the business bank account.

The source document to be used to record this transaction is a/an ... .