I am interested to hear from organisations which issue electronic receipts immediately upon reception of online gifts, with no "human" intervention.  What are your procedures?  How do you deal with this "broken" receipt sequence?  What are the auditors requests for control?  Our paper receipts are numbered and they have to match the number in RE.  So what is a third party (for an event or on a continuing basis) issue the receipts for you?  Do you have to give them a range of numbers not to be used in the meantime?  Receipt stack maybe?  Thanks.