How to change the amount on an AP invoice after it has been posted in Sage 300

The problem may be resolved by issuing either a credit / debit note or making an adjustment to change the amount on the invoice.

To enter a credit or debit note:

1. Go to the Accounts Payable, A/P Transactions, Invoice Entry window
2. Select or enter the Vendor number
3. In the Document Type dropdown, select Credit Note to reduce the amount on the invoice
   Select Debit Note to increase the amount on the invoice
4. Enter a Document Number
5. In the Apply-To Document field, select the document to apply the credit or debit note to
6. In the Document Total field, enter the total amount of the document. This amount will increase or decrease the invoice specified in the Apply-To Document field
7. In the Detail grid, enter the amount (less any taxes)
8. Add the Invoice Entry
9. Post the Invoice Batch

To enter an adjustment:

1. Go to the Accounts Payable, A/P Transactions, Adjustment Entry window
2. Select or enter the Vendor number
3. In the Document Number field, select the document to adjust
4. In the detail grid, select or enter the Adjust Line Number, Dist. Code or G/L Account to adjust
5. Enter a debit to increase the balance of an expense, purchases, or inventory account
6. Enter a credit to decrease the balance of an expense, purchases, or inventory account
7. Add the Adjustment Entry
8. Post the Adjustment Batch

For specific instructions on these fields, click F1 for Online Help.