Field help (CODLOF) 

An expense is identified in a unique way using a reference with up to 20 alphanumeric characters and a line number.
The management of this reference depends on the value of the LOFAUTNUM - Exepnse numbering parameter:

The reference assigned automatically to the expense is based on the sequence number counter assigned to the Expense referencesection of the Fixed asset module (Sequence number counter Structure and Sequence number counter assignment functions).