I sent an original sales invoice for $11,900.00. The boss changed his mind making it $10,900.00. The $10,900.00 was paid by the client and was reconciled in April, 2021 BAS. Leaving the $1,000.00 as unpaid. I have totally confused myself with what I have done. I firstly reversed the invoice on the same date it was originally sent. I then applied a credit note and now I have a minus -$10,900.00 sitting in credit. I have no idea what to do now and I would appreciate some advice. Thank you. Susan