Hi Brandy,

Please see below different types of AR adjustments and their impact on the system, I hope this will allow you you select the right one for your case (in case invoice is posted to jobs, I would probably go with Billed Credit):

Billed credit: Applies a billed credit adjustment to the invoice and decreases the billed amounts on the customer, contract, and contract item or job. This also reduces the revenue amount in General Ledger. Use this type when you want the credit memo to reduce the amount billed for the invoice.
Billed debit: Applies a billed debit adjustment to the invoice and increases the billed amounts on the customer, contract, and contract item or job. This also increases the revenue amount in General Ledger. Use this type when you want the debit memo to increase the amount billed for the invoice.
AR credit: Applies a credit adjustment to the invoice but does not decrease the billed amount on the customer, contract, and contract item or job. If this is a non-finance charge distribution, it also affects the write-off account from AR Settings in General Ledger. If this is a finance charge distribution, it also affects the finance charge write-off account from AR Settings in General Ledger. Use this type when you want to reduce the receivable amount for the invoice without affecting the billed amounts.
AR debit: Applies a debit adjustment to the invoice but does not increase the billed amount on the customer, contract, and contract item or job. It also affects the revenue accounts in General Ledger. Use this type when you want to increase the receivable amount for the invoice without affecting the billed amounts.
Bad debt: Applies a credit adjustment to the invoice but does not decrease the billed amount on the customer, contract, and contract item or job. This also affects the bad debt account from AR Settings in General Ledger. Use this type when you want to reduce the receivable amount for the invoice (without affecting the billed amounts) and you want this adjustment reflected as a bad debt write-off in General Ledger.
Write off: Applies a credit adjustment to the invoice but does not decrease the billed amount on the customer, contract, and contract item or job. If this is a non-finance charge distribution, it also affects the write-off account from AR Settings in General Ledger. If this is a finance charge distribution, it also affects the finance charge write-off account from AR Settings in General Ledger. Use this type when you want to reduce the receivable amount for the invoice without affecting the billed amounts.

Invoice adjustment