In order to add a credit note to one of your suppliers, first locate the supplier using the search bar. Once located, scroll to the 'Credit note' section and click 'Add new credit note'. Fill in the information as required and click 'Add credit note' to create it.
Once this is done, you will need to allocate this credit note to a supplier invoice. To do this, click 'View' on the credit note and in the 'allocation history' section, click 'Add new allocation'.
Edit the information as required and then select the right invoice from the dropdown or find it in the list. Enter the correct amount in the 'amount to allocate' column, you can delete and unnecessary rows with the 'Delete' button and then click 'Add cash allocation'.
Please note, if the invoice was assigned to a job, the credit note will be assigned to that job as well.