Standard Acknowledgement letters can be utilized as basic templates for communicating with customers. For example, you can create a standard letter to send to selected donors thanking them for a recent donation. Fundraising letters will be selected and generated on the Simple and Flexible donation screens and by the Pledge Acknowledgement Letters batch process (FND630).
In regards to acknowledgement letter hierarchy, if a default letter is linked to a fund, campaign, appeal, and product, the system will check for and print the letter in the following order: product, appeal, campaign, and then fund.
For more information, please see the Standard Letters Overview.