When creating Thank You Letter Code Associations, it's important to keep in mind that the lower threshold amount can cause unexpected behaviour. If a code has a lower threshold of $0.00, it will become the default for all transactions (in lieu of Manual) and be mistakenly applied to transactions with pledge amounts greater than the upper threshold specified for your various codes. This lower threshold set to $0.00 assigns the wrong letter template to donors. To learn more, visit the Customer Support project linked below.
Transaction Letter Code Associations are found under the Andar/360 Main Menu > Communications > Thank You Letters > Transaction Letter Code Associations.