The credits must have one of the following statuses to be able to be edited: New, Resubmitted, Pending Review.
Instructions
Ui steps
size
small
Ui step
Go to the Order Entry>>Credit Summary.
Ui step
Use the filters to Search for the credit that is going to be edited.
Ui step
Go to the Actions column and click on Edit. The system will open either the standalone credits screen or the credit based on invoices screen, where you will be able to edit the credit information.