An allocation source identifies the account, or range of accounts, to be used as the basis of an allocation. Some, or all, of the transactions that have been posted to the source accounts are used to calculate the source amount for the allocation. When the allocation is performed, this source amount is manipulated to determine amount to be charged to the allocation target.
The allocation source determines how the source amount for the allocation are calculated. It does this by identifying the transactions for the source accounts that are included in the source amount. You can select the transactions by accounting period and by applying powerful selection criteria. You can select either budget or actual transactions for the source accounts.