parol evidence exceptions

• Parol evidence rule s92 exceptions:

  a)Invalidity of the documents

  b)Separate oral agreement - chase perdana 's case where separate oral agreement was inadmissible as it contradicted the written document

  c)Condition precedent

  d) Subsequent oral agreement

  e)Usage or custom – 15% of payment is expected upfront in a freelance contract

  f)Ambiguity (in the contract)