Document Type
Enter a user defined code (00/DT) that identifies the type of document. This code also indicates the origin of the transaction. Oracle has reserved document type codes for vouchers, invoices, receipts, and time sheets, which create automatic offset entries during the post program. (These entries are not self-balancing when you originally enter them.) The following document types are defined by Oracle and should not be changed:
P: Accounts Payable
R: Accounts Receivable
T: Payroll
I: Inventory
O: Purchase Order Processing
J: General Accounting/Joint Interest Billing
S: Sales Order Processing