PVL3702
Assignment 1
Semester 1
Due March 2026
, Mistake in Contract: Nature of the Error and Validity of the Agreement
1. Introduction
In South African contract law, a valid contract requires consensus between the parties.
This means both parties must agree on the same thing in the same sense. Where a
mistake prevents true agreement, the contract may be void. The key issue in this
scenario is whether the error regarding the authenticity of the ring affected the existence
of consensus and therefore the validity of the contract.
The facts show that both Jabu and Raymond believed they were dealing with a genuine
diamond ring. The ring was later discovered to be fake. The legal question is therefore
what type of mistake occurred and whether it renders the contract valid or void.
2. Type of Mistake Relevant to the Scenario
The relevant mistake is a common mistake (error communis) relating to the subject
matter of the contract, specifically the nature or identity of the merx (res vendita).
A common mistake occurs when both parties share the same incorrect assumption
about a fundamental aspect of the contract (Hutchison & Pretorius, 2017). In this case,
both Jabu and Raymond believed that the ring was a genuine diamond. Their
consensus was based on that shared assumption.
This mistake is material because it relates directly to the essential characteristics of
the thing being sold. The authenticity of a diamond is not a minor detail. It goes to the
core identity and value of the item. A diamond ring and a fake ring are legally regarded
as fundamentally different objects.
In South African law, a mistake is material if it prevents true agreement between the
parties. A mistake about the nature of the subject matter is generally considered
material because it means the parties were not in agreement about the same thing
(Sonnekus & Neels, 2016).
Assignment 1
Semester 1
Due March 2026
, Mistake in Contract: Nature of the Error and Validity of the Agreement
1. Introduction
In South African contract law, a valid contract requires consensus between the parties.
This means both parties must agree on the same thing in the same sense. Where a
mistake prevents true agreement, the contract may be void. The key issue in this
scenario is whether the error regarding the authenticity of the ring affected the existence
of consensus and therefore the validity of the contract.
The facts show that both Jabu and Raymond believed they were dealing with a genuine
diamond ring. The ring was later discovered to be fake. The legal question is therefore
what type of mistake occurred and whether it renders the contract valid or void.
2. Type of Mistake Relevant to the Scenario
The relevant mistake is a common mistake (error communis) relating to the subject
matter of the contract, specifically the nature or identity of the merx (res vendita).
A common mistake occurs when both parties share the same incorrect assumption
about a fundamental aspect of the contract (Hutchison & Pretorius, 2017). In this case,
both Jabu and Raymond believed that the ring was a genuine diamond. Their
consensus was based on that shared assumption.
This mistake is material because it relates directly to the essential characteristics of
the thing being sold. The authenticity of a diamond is not a minor detail. It goes to the
core identity and value of the item. A diamond ring and a fake ring are legally regarded
as fundamentally different objects.
In South African law, a mistake is material if it prevents true agreement between the
parties. A mistake about the nature of the subject matter is generally considered
material because it means the parties were not in agreement about the same thing
(Sonnekus & Neels, 2016).
