NetCommunity is designed to prevent use of the same Receipt Number on more than one gift within the same Receipt Stack.  Instead, create a new receipt stack and set the initial receipt number for that stack to the desired receipt number.
  1. Log in to NetCommunity as a supervisor
  2. Click Administration > Sites & settings
  3. Select the Settings tab for the organization level [i.e. the top-level item in the treeview on the left]
  4. Select the Financial tab
  5. Enter a new stack name in the Receipt Stack field
  6. Enter the first receipt number that should be issued for the new receipt stack in the Initial receipt number field
  7. Click Save