Croc Constructions Ltd (Croc) entered into a two-year arrangement

with Venice Ltd (Venice) to build a manufacturing facility for $800,000. The construction of the facility is a single performance obligation. At the end of the first year, Croc and Venice agree to modify the original design of the facility and this will increase the transaction price by approximately $160,000 and the expected cost by approximately $81000. Required Applying AASB 15, does the modification represent a separate contract for Croc and how should it account for the modification?