Why is ProSeries asking that a pdf for a written acknowledgement for a charitable contribution of $500 be attached as a pdf in order to file a return electronically?

CPA808 · ‎02-27-2022

The review function of ProSeries states that a pdf for a written acknowledgement for a charitable contribution of $500 be attached as a pdf in order to file a return electronically. This is the first time I have encountered this.