Guide to the use of this commentary
The Secretariat Commentary is on the 1978 Draft of the CISG, not the Official Text, which re-numbered most of the articles of the 1978 Draft. The Secretariat Commentary on article 20 of the 1978 Draft is quoted below with the article references contained in this commentary conformed to the numerical sequences of the Official Text, e.g., article 20 [draft counterpart of CISG article 22].
To the extent it is relevant to the Official Text, the
Secretariat Commentary on the 1978 Draft is perhaps the
most authoritative source one can cite. It is the
closest counterpart to an Official Commentary on the
CISG. A match-up of this article of the 1978 Draft
with the version adopted for the Official Text is
necessary to document the relevancy of the Secretariat
Commentary on this article. See the match-up for this article for a validation of citations to this
Secretariat Commentary. This match-up indicates that article 20 of the 1978 Draft
and CISG article 22 are identical.
Text of Secretariat Commentary on article 20 of the 1978 Draft
[draft counterpart of CISG article 22] [Withdrawal of acceptance]
PRIOR UNIFORM LAW
ULF, article 10.
Article 20 [draft counterpart of CISG article 22] provides that
an acceptance cannot be withdrawn after it has become effective.
This provision complements the rule in article 21 [draft
counterpart of CISG article 23] that a contract of sale is
concluded at the moment the acceptance becomes effective [see
footnote 1] (OFFICIAL RECORDS, p. 25).
1. Article 16(2) and 16(3) [draft counterpart of CISG articles 18(2) and 18(3)] states when an acceptance becomes effective.