For a donation to appear on a Gift Aid claim the following must all apply:

• The donor must have a first line of address
• The donor must have a valid postal address 
• The donor Title must less than 4 characters in length (e.g 'Master' or 'Mrs.' would fail, or there may be erroneous spaces after the Title causing the failure)
• The donor must have a Gift Aid Declaration that
• is not canceled 
• has a valid tax payer title, first & last name
• has been confirmed if needed - see this 
• The Transaction must have
• Can Recover Tax set to yes - see this
• Date Paid is
• within 4 years of the end of the financial year you received it in
• on or after the gift aid declaration start date
• on or before the gift aid declaration end date
• Product is gift aid-able - see this
• Payment method is gift aid-able - see this
• Must not have been previously claimed
• Not been set to not to claim Gift Aid as part of a Transaction upload