Both Credit and Debit Memo are used for adjusting the suppliers balance and both is a negative amount. Debit Memo is created by you and send to the supplier and credit memo is recieved from the supplier and record it. - T.Dheeraj Singh

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If the original transactions are posted into GL, then the transactions can not be modified in the respective sub-ledgers. If you want to modify the account balances for some reasons, then you have to enter the debit memo or credit memo to adjust the account balances previously entered.
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160970
Answered On : Oct 15th, 2006
The reply posted by Dheeraj is the right one. The answer provided by Saravanan is related to Reversals. Pls take care of the same to aviod misguiding people.
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Credit memo In Oracle Payables and Oracle Projects, a document that partially or fully reverses an original invoice.
Debit memos Debits that you assign to a customer to collect additional charges. For example, you may want to charge a customer for unearned discounts taken, additional freight charges, taxes, or finance charges.

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A credit memo is an invioce that reduces the amount due to a customer's invioce. This usually occurs becuase the customer has returned some of the goods (goods returned ) the adjustments carried out here affects the original invioce.
A debit memo is a reuest from customer for the reduction of the amount stated on his or her invoice. This docment simply notifies the company or organisation to carry out the adjustment. it does not in it self affect the original invoice.
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Ram Panday from Saturn e-solutions pvt.ltd
Answered On : Feb 13th, 2013
Credit memo is used to reduce the balance due for a transaction and Debits that we assign to a customer to collect additional charges like freight charges,taxes,or finance charges.
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