The respondent (Eckstein Properties) sold immovable property situated at 37 Willowton Road, Pietermaritzburg to the appellant (Milner Street Properties) for R3.5 million in July 1994. Both parties were registered VAT vendors. The property was leased to Amalgamated Shoes Limited (Amshoe) which used it as a factory. The sale was intended to be a zero-rated transaction under s 11(1)(e) of the Value Added Tax Act 89 of 1991. Unknown to the parties, s 11(1)(e) was amended with effect from 25 November 1994, introducing formal requirements that had to be agreed in writing before zero rating could apply. The written agreement concluded between the parties did not comply with these new formalities as they were unaware of the amendment. The purchaser was substituted twice (from Lenco to Hendler to the appellant), with the final agreement signed on 7 December 1994. Correspondence between the parties' legal representatives made clear their intention that the transaction be zero-rated. Transfer was effected on 7 February 1995. In August 1995, the appellant's external auditors alerted it to the possibility of claiming a VAT refund of R429,824.56 from the Commissioner based on the non-compliance with the formal requirements. The appellant demanded a tax invoice reflecting VAT from the respondent, which the respondent refused to supply, maintaining the transaction was zero-rated.