Question: What is the best / correct way to remove A/R invoices for a cancelled project? Our Process: When a new project is created, we have automation that automatically creates a Sales Order and an Invoice, the Invoice being for the Contract Value and Cash Receipts. We can easily "Close" a "Sales Order", but need advice on the best way to remove the Invoice so that it doesn't negatively affect A/R and portray us as having more A/R than we actually do.

Probably a credit memo is best. If the period isn't closed you could delete them but if it is closed then a credit memo is a good option

I agree with credit memo