The work in progress credit (also referred to as contract liabilities) relate to the obligation to perform work for clients on projects for which the Group has received a consideration from the client (or the client owes an amount). In practical terms, this item comprises the invoiced instalments less the revenue in proportion to the progress in fulfilling the performance obligation (see also accounting policy 5). Total expected project losses, if any, are directly recognised as expenses in the relevant period and are accounted for in the statement of financial position in provisions (see also accounting policy 21d).