What is the claim of condictio causa data causa non secuta for?

What are the essentials for such a claim?

Which case defined the claim of Condictio C.D. and at what levels?

When something is given for a 'basis' that fails is this enforceable in contract?

'Cause'?

What is the basis of performance by both parties?

How is 'purpose' identified?

Lord Morison in Grieve v Morrison

Are claims for recovery of a benefit for a MOTIVE (rather than a cause) that fails recoverable?

What range of examples of cases does the Condictio C.D cover?

Performance made on the understanding that the person who receives it does something

Shilliday v Smith

Satchwell v McIntosh

Performance made on the understanding that what is received will be put to a particular use

Performance made in anticipation of creating an obligation

Purpose outwith but closely associated with contract

What defences are there to a condictio C.D claim?

What is the effect of frustration of a contract?

Development of Condictio C.D for frustration cases?

What are the consequences of the approach of using a Condictio C.D. claim for valid but frustrated contracts as in Cantiere San Rocco v Clyde Shipbuilding and Engineering Co?